1

                                                                     EXHIBIT 2.3
                                                                     -----------
                          AGREEMENT AND PLAN OF MERGER

                                   DATED AS OF
                                DECEMBER 17, 1999

                                 BY AND BETWEEN

                            PARK NATIONAL CORPORATION

                                       AND

                                    SNB CORP.


   2



                                TABLE OF CONTENTS

                                                                          PAGE
                                                                          ----

ARTICLE ONE -- THE MERGER...................................................2

   1.01.    Merger; Surviving Corporation...................................2
   1.02.    Effective Time..................................................2
   1.03.    Effects of the Merger...........................................2

ARTICLE TWO -- CONVERSION OF SHARES; EXCHANGE OF CERTIFICATES...............2

   2.01.    Conversion of SNB Shares........................................2
   2.02.    Exchange of Certificates........................................3
   2.03.    Park Shares.....................................................8

ARTICLE THREE -- REPRESENTATIONS AND WARRANTIES OF SNB......................9

   3.01.    Representations and Warranties of SNB...........................9

ARTICLE FOUR -- REPRESENTATIONS AND WARRANTIES OF PARK.....................27

   4.01.    Representations and Warranties of Park.........................27

ARTICLE FIVE -- FURTHER COVENANTS OF SNB...................................31

   5.01.    Operation of Business..........................................31
   5.02.    Notification...................................................35
   5.03.    Shareholder Approval...........................................36
   5.04.    Acquisition Proposals..........................................36
   5.05.    Delivery of Information........................................37
   5.06.    Affiliates Compliance with the Securities Act..................37
   5.07.    Takeover Laws..................................................38
   5.08     SNB Stock Options..............................................38

ARTICLE SIX -- FURTHER COVENANTS OF PARK...................................38

   6.01.    Current Information............................................38
   6.02.    Opportunity of Employment; Employee Benefits...................38
   6.03.    AMEX Listing...................................................39
   6.04.    Takeover Laws..................................................39
   6.05.    Notification...................................................39
   6.06     Officers' and Directors' Indemnification.......................40

ARTICLE SEVEN -- FURTHER OBLIGATIONS OF THE PARTIES........................41

                                      -i-

   3


   7.01.    Necessary Further Action......................................41
   7.02.    Cooperative Action............................................41
   7.03.    Satisfaction of Conditions....................................41
   7.04.    Accounting and Tax Treatment..................................42
   7.05.    Confidentiality...............................................42
   7.06.    Press Releases................................................42
   7.07.    Registration Statement........................................42
   7.08.    Regulatory Applications.......................................44
   7.09.    Dividends.....................................................44
   7.10.    Supplemental Assurances.......................................44

ARTICLE EIGHT -- CONDITIONS PRECEDENT TO THE OBLIGATIONS OF THE
PARTIES...................................................................45

   8.01.    Conditions to the Obligations of Park.........................45
   8.02.    Conditions to the Obligations of SNB..........................46
   8.03.    Mutual Conditions.............................................48

ARTICLE NINE -- CLOSING...................................................49

   9.01.    Closing.......................................................49
   9.02.    Closing Transactions Required of Park.........................49
   9.03.    Closing Transactions Required of SNB..........................50

ARTICLE TEN -- NON-SURVIVAL OF REPRESENTATIONS, WARRANTIES AND
COVENANTS.................................................................50

   10.01.   Non-Survival of Representations, Warranties and Covenants.....50

ARTICLE ELEVEN -- TERMINATION.............................................51

   11.01.   Termination...................................................51
   11.02.   Effect of Termination.........................................55

ARTICLE TWELVE -- MISCELLANEOUS...........................................56

   12.01.   Notices.......................................................56
   12.02.   Counterparts..................................................57
   12.03.   Entire Agreement..............................................57
   12.04.   Successors and Assigns........................................57
   12.05.   Captions......................................................57
   12.06.   Governing Law.................................................57
   12.07.   Payment of Fees and Expenses..................................57
   12.08.   Amendment.....................................................58
   12.09.   Waiver........................................................58
   12.10.   Disclosure Schedules..........................................58

                                      -ii-
   4


   12.11.   No Third-Party Rights.........................................58
   12.12.   Waiver of Jury Trial..........................................58
   12.13.   Severability..................................................58


                                     -iii-
   5


                            GLOSSARY OF DEFINED TERMS

         The following terms, when used in this Agreement, have the meanings
ascribed to them in the corresponding Sections of this Agreement listed below:

"Agreement"                                   --       Preamble
"AMEX"                                        --       Section 2.02(e)
"Acquisition Proposal"                        --       Section 5.04
"Average Closing Price of Park Shares"        --       Section 2.02(e)
"Bank Real Estate Collateral"                 --       Section 3.01(y)
"Bank"                                        --       Section 3.01(a)
"BHC Act"                                     --       Section 3.01(a)
"CERCLA"                                      --       Section 3.01(y)
"Closing Date"                                --       Section 9.01
"Closing"                                     --       Section 9.01
"Code"                                        --       Preamble
"Compensation and Benefit Plans"              --       Section 3.01(s)
"Constituent Corporations"                    --       Preamble
"Consultants"                                 --       Section 3.01(s)
"Costs"                                       --       Section 6.06(a)
"Determination Date"                          --       Section 11.01(d)
"Directors"                                   --       Section 3.01(s)
"Dissenting Share"                            --       Section 2.02(k)
"DOL"                                         --       Section 3.01(s)
"Effective Time"                              --       Section 1.02
"Employees"                                   --       Section 3.01(s)
"Environmental Laws"                          --       Section 3.01(y)
"ERISA"                                       --       Section 3.01(s)
"ERISA Affiliate"                             --       Section 3.01(s)
"ERISA Affiliate Plan"                        --       Section 3.01(s)
"Exchange Act"                                --       Section 4.01(i)
"Exchange Agent"                              --       Section 2.02(a)
"Exchange Fund"                               --       Section 2.02(a)
"Exchange Ratio"                              --       Section 2.01(b)
"FDIC"                                        --       Section 3.01(o)
"Federal Reserve"                             --       Section 3.01(k)
"Final Index Price"                           --       Section 11.01(d)
"Final Price"                                 --       Section 11.01(d)
"GAAP"                                        --       Section 3.01(f)
"Governmental Authority"                      --       Section 3.01(p)
"Hazardous Substances"                        --       Section 3.01(y)
"Indemnified Party"                           --       Section 6.06(a)
"Index Group"                                 --       Section 11.01(d)
"Index Price"                                 --       Section 11.01(d)
"Initial Index Price"                         --       Section 11.01(d)

                                      -iv-
   6


"Insurance Amount"                            --       Section 6.06(b)
"IRS"                                         --       Section 3.01(l)
"Loan Assets"                                 --       Section 3.01(i)
"Loan Documentation"                          --       Section 3.01(i)
"material adverse effect"                     --       Section 3.01(a)
"material"                                    --       Section 3.01(a)
"Merger Shares"                               --       Section 2.01(b)
"Merger"                                      --       Preamble
"OCC"                                         --       Section 3.01(k)
"Officers"                                    --       Section 3.01(s)
"OGCL"                                        --       Section 1.01
"Park"                                        --       Preamble
"Park Balance Sheet Date"                     --       Section 4.01(f)
"Park Disclosure Schedule"                    --       Preamble
"Park Shares"                                 --       Preamble
"PBGC"                                        --       Section 3.01(s)
"PCBs"                                        --       Section 3.01(y)
"Pension Plan"                                --       Section 3.01(s)
"Proxy/Prospectus"                            --       Section 7.07(a)
"Registration Statement"                      --       Section 7.07(a)
"Regulatory Authorities"                      --       Section 3.01(o)
"Rule 145 Affiliates"                         --       Section 5.06(a)
"SEC"                                         --       Section 3.01(c)
"Secretary of State"                          --       Section 1.02
"Securities Act"                              --       Section 3.01(u)
"SNB"                                         --       Preamble
"SNB Balance Sheet Date"                      --       Section 3.01(f)
"SNB Certificates"                            --       Section 2.02(a)
"SNB Disclosure Schedule"                     --       Preamble
"SNB Financial Statements"                    --       Section 3.01(f)
"SNB Meeting"                                 --       Section 5.03(b)
"SNB Proxy Statement"                         --       Section 5.03(b)
"SNB Real Properties"                         --       Section 3.01(m)
"SNB Shares"                                  --       Preamble
"SNB Shareholders' Approval"                  --       Section 11.01(b)
"SNB Stock Option Plan"                       --       Section 3.01(b)
"SNB Stock Options"                           --       Section 3.01(b)
"Starting Date"                               --       Section 11.01(d)
"Starting Price"                              --       Section 11.01(d)
"Subsidiary"                                  --       Section 3.01(c)
"Surviving Corporation"                       --       Section 1.01
"Takeover Laws"                               --       Section 3.01(aa)
"Tax Returns"                                 --       Section 3.01(l)
"Tax"                                         --       Section 3.01(l)


                                      -v-
   7

"Total SNB Shares Outstanding or
       Subject to Options"                    --       Section 2.01(b)
"trading days"                                --       Section 2.02(e)
"Updated Park Disclosure Schedule"            --       Section 6.05
"Updated SNB Disclosure Schedule"             --       Section 5.02

                                      -vi-

   8




                          AGREEMENT AND PLAN OF MERGER
                          ----------------------------


                  THIS AGREEMENT AND PLAN OF MERGER (the "Agreement"), dated as
of December 17, 1999, is made and entered into by and between Park National
Corporation, an Ohio corporation ("Park"), and SNB Corp., an Ohio corporation
("SNB") (Park and SNB are sometimes hereinafter collectively referred to as the
"Constituent Corporations").

                              W I T N E S S E T H:

                  WHEREAS, the Boards of Directors of SNB and Park have each
determined that it is in the best interests of their respective corporations and
shareholders for SNB to merge with and into Park (the "Merger"), upon the terms
and subject to the conditions set forth in and pursuant to the terms of this
Agreement; and

                  WHEREAS, the Boards of Directors of SNB and Park have each
approved this Agreement and the consummation of the transactions contemplated
hereby; and

                  WHEREAS, as a result of the Merger, in accordance with the
terms of this Agreement, SNB will cease to have a separate corporate existence,
and shareholders of SNB will receive from Park in exchange for each common
share, without par value, of SNB (the "SNB Shares"), the number of common
shares, without par value, of Park (the "Park Shares") calculated in accordance
with the terms of this Agreement; and

                  WHEREAS, it is the intention of SNB and Park that the Merger
contemplated by this Agreement be accounted for under the "pooling-of-interests"
accounting method; and

                  WHEREAS, for Federal income tax purposes, it is intended that
the Merger contemplated by this Agreement qualify as a "reorganization" under
the provisions of Section 368(a) of the Internal Revenue Code of 1986, as
amended (the "Code"); and

                  WHEREAS, SNB has previously provided to Park a schedule
disclosing additional information about SNB (the "SNB Disclosure Schedule"); and

                  WHEREAS, Park has previously provided to SNB a schedule
disclosing additional information about Park (the "Park Disclosure Schedule");

                  NOW, THEREFORE, in consideration of the premises and the
respective representations, warranties, covenants, agreements and conditions
hereinafter set forth, SNB and Park, intending to be legally bound hereby, agree
as follows:

   9


                                   ARTICLE ONE
                                   THE MERGER

                  1.01. MERGER; SURVIVING CORPORATION

                  Upon the terms and subject to the conditions of this
Agreement, at the Effective Time (as defined in Section 1.02), SNB shall merge
with and into Park in accordance with the General Corporation Law of the State
of Ohio (the "OGCL"). Park shall be the continuing and surviving corporation in
the Merger, shall continue to exist under the laws of the State of Ohio, and
shall be the only one of the Constituent Corporations to continue its separate
corporate existence after the Effective Time. As used in this Agreement, the
term "Surviving Corporation" refers to Park at and after the Effective Time. As
a result of the Merger, the outstanding shares of capital stock and the treasury
shares of the Constituent Corporations shall be converted in the manner provided
in Article Two.

                  1.02. EFFECTIVE TIME

                  The Merger shall become effective upon the later of (a) the
filing of the appropriate certificate of merger with the Secretary of State of
the State of Ohio (the "Secretary of State") or (b) such time thereafter as is
agreed to in writing by Park and SNB and so provided in the certificate of
merger. The date and time at which the Merger shall become effective is referred
to in this Agreement as the "Effective Time."

                  1.03. EFFECTS OF THE MERGER

                  At the Effective Time:

                  (a)      the Articles of Incorporation of Park as in effect
                           immediately prior to the Effective Time shall be the
                           articles of the Surviving Corporation;

                  (b)      the Regulations of Park as in effect immediately
                           prior to the Effective Time shall be the regulations
                           of the Surviving Corporation; and

                  (c)      the Merger shall have the effects prescribed in the
                           OGCL.

                                   ARTICLE TWO
                 CONVERSION OF SHARES; EXCHANGE OF CERTIFICATES

                  2.01. CONVERSION OF SNB SHARES

                  At the Effective Time, by virtue of the Merger and without any
action on the part of the holder thereof:

                  (a)      Conversion of SNB Shares. Subject to Sections 2.01(c)
                           and 2.02, each SNB Share issued and outstanding
                           immediately prior to the Effective Time shall be
                           converted into that number of fully paid and
                           non-assessable

                                      -2-
   10

                           Park Shares equal to the Exchange Ratio as defined in
                           Section 2.01(b) of this Agreement. After the
                           Effective Time, all such SNB Shares shall no longer
                           be outstanding and each certificate previously
                           representing any SNB Shares shall thereafter
                           represent the Park Shares into which such SNB Shares
                           have been converted. Certificates previously
                           representing SNB Shares shall be exchanged for
                           certificates representing whole Park Shares (and cash
                           in lieu of fractional Park Share interests) issued in
                           consideration therefor upon the surrender of such
                           certificates in accordance with Section 2.02, without
                           interest.

                  (b)      Exchange Ratio.

                           (i)   The Exchange Ratio shall be equal to:

                                        835,500 (THE "MERGER SHARES")
                                 -------------------------------------------
                                 Total SNB Shares Outstanding or Subject to
                                 Options (as defined in Section 2.01(b)(ii))

                                 The Exchange Ratio shall be rounded to the
                                 nearest hundredth.

                           (ii)  "Total SNB Shares Outstanding or Subject to
                                 Options" shall mean the sum of (A) the total
                                 number of SNB Shares issued and outstanding
                                 immediately prior to the Effective Time (other
                                 than SNB Shares held in treasury by SNB) plus
                                 (B) the total number of SNB Shares which are
                                 subject to an SNB Stock Option (as defined in
                                 Section 3.01(b)) immediately prior to the
                                 Effective Time.

                           (iii) The Exchange Ratio shall be subject to
                                 adjustment in accordance with Section 2.02(l).

                  (c)      Cancellation of Treasury Shares; SNB Shares Owned by
                           Park. All SNB Shares held by SNB as treasury shares
                           shall be cancelled and retired and shall cease to
                           exist and no Park Shares or other consideration shall
                           be delivered in exchange therefor. All SNB Shares, if
                           any, that are beneficially owned by Park shall become
                           treasury shares of the Surviving Corporation.

                  2.02.    EXCHANGE OF CERTIFICATES

                  (a)      Exchange Agent. At or prior to the Effective Time,
                           Park shall deposit, or shall cause to be deposited,
                           with First-Knox National Bank (the "Exchange Agent"),
                           for the benefit of the holders of certificates which
                           immediately prior to the Effective Time evidenced SNB
                           Shares (the "SNB Certificates"), for exchange in
                           accordance with this Article Two, certificates
                           representing Park Shares and an estimated amount of
                           cash

                                      -3-
   11

                           necessary to pay cash in lieu of fractional Park
                           Share interests in accordance with Section 2.02(e)
                           (such certificates for Park Shares, together with any
                           dividends or distributions with a record date
                           occurring on or after the Effective Time with respect
                           thereto, and such cash for fractional Park Share
                           interests being hereinafter referred to as the
                           "Exchange Fund") issuable pursuant to Section 2.01 in
                           exchange for such SNB Shares.

                  (b)      Exchange Procedures. As soon as reasonably
                           practicable after the Effective Time, the Surviving
                           Corporation shall cause the Exchange Agent to mail to
                           each holder of record of SNB Shares immediately prior
                           to the Effective Time, (i) a letter of transmittal
                           (which shall specify that delivery shall be effected,
                           and risk of loss and title to the SNB Certificates
                           shall pass, only upon delivery of such SNB
                           Certificates to the Exchange Agent, and which shall
                           be in such form and have such other provisions as the
                           Surviving Corporation may reasonably specify) and
                           (ii) instructions for use in effecting the surrender
                           of the SNB Certificates in exchange for certificates
                           representing Park Shares and cash in lieu of
                           fractional Park Share interests. Upon surrender by
                           such holder of an SNB Certificate or Certificates
                           evidencing all SNB Shares standing in such holder's
                           name for cancellation to the Exchange Agent together
                           with such letter of transmittal, duly executed, the
                           holder of such SNB Certificate or Certificates shall
                           be entitled to receive in exchange therefor a
                           certificate representing the number of whole Park
                           Shares, and/or a check in respect of any fractional
                           Park Share interests, which such holder has the right
                           to receive in respect of the SNB Certificate or
                           Certificates surrendered pursuant to the provisions
                           of this Article Two (after taking into account all
                           SNB Shares then held by such holder), and the SNB
                           Certificate or Certificates so surrendered shall
                           forthwith be canceled. In the event of a transfer of
                           ownership of SNB Shares which is not registered in
                           the transfer records of SNB, a certificate
                           representing the proper number of Park Shares, and/or
                           a check in respect of any fractional Park Share
                           interests, may be issued to a transferee if the SNB
                           Certificate representing such SNB Shares is presented
                           to the Exchange Agent, accompanied by all documents
                           required to evidence and effect such transfer and by
                           evidence that any applicable share transfer taxes
                           have been paid. Until surrendered as contemplated by
                           this Section 2.02, each SNB Certificate shall be
                           deemed at any time after the Effective Time for all
                           corporate purposes (except as provided in Section
                           2.02(c)) to represent only the number of whole Park
                           Shares into which the SNB Shares represented by such
                           SNB Certificate have been converted as provided in
                           this Article Two and the right to receive upon such
                           surrender cash in lieu of any fractional Park Share
                           interests as contemplated by this Section 2.02.

                                      -4-
   12

                  (c)      Distributions with Respect to Unexchanged Shares;
                           Voting.

                           (i)      Dividends or other distributions declared or
                                    made after the Effective Time with respect
                                    to Park Shares with a record date after the
                                    Effective Time shall be paid to the holder
                                    of any unsurrendered SNB Certificate with
                                    respect to the Park Shares represented
                                    thereby, and any cash payment in lieu of
                                    fractional Park Shares shall be paid to any
                                    such holder pursuant to Section 2.02(e),
                                    only after surrender of such SNB Certificate
                                    by the holder thereof. Subject to the effect
                                    of applicable laws, following surrender of
                                    any such SNB Certificate, there shall be
                                    paid to the holder of the certificates
                                    representing whole Park Shares issued in
                                    exchange therefor, without interest, (A) as
                                    promptly as practicable after the time of
                                    such surrender, the amount of any cash
                                    payable with respect to a fractional Park
                                    Share interest to which such holder is
                                    entitled pursuant to Section 2.02(e) and the
                                    amount of dividends or other distributions
                                    with a record date after the Effective Time
                                    theretofore paid (but withheld pursuant to
                                    the immediately preceding sentence) with
                                    respect to such whole Park Shares, and (B)
                                    at the appropriate payment date, the amount
                                    of dividends or other distributions with a
                                    record date after the Effective Time but
                                    prior to surrender and a payment date
                                    subsequent to surrender payable with respect
                                    to such whole Park Shares.

                           (ii)     Former holders of record as of the Effective
                                    Time of SNB Shares shall not be entitled to
                                    vote the Park Shares into which their SNB
                                    Shares shall have been converted on matters
                                    submitted to the shareholders of Park until
                                    the SNB Certificates formerly representing
                                    such SNB Shares shall have been surrendered
                                    in accordance with this Section 2.02 or
                                    certificates evidencing such Park Shares
                                    shall have been issued in exchange therefor.

                  (d)      No Further Ownership Rights in SNB Shares. All Park
                           Shares issued upon conversion of SNB Shares in
                           accordance with the terms hereof (including any cash
                           paid pursuant to Section 2.02(c) or 2.02(e)) shall be
                           deemed to have been issued in full satisfaction of
                           all rights pertaining to such SNB Shares, subject,
                           however, to the Surviving Corporation's obligation to
                           pay any dividends or make any other distributions
                           with a record date prior to the Effective Time which
                           may have been declared or made by SNB on such SNB
                           Shares in accordance with the terms of this Agreement
                           on or prior to the Effective Time and which remain
                           unpaid at the Effective Time. If, after the Effective
                           Time, SNB Certificates are presented to the Surviving
                           Corporation for any reason, they shall be canceled
                           and exchanged as provided in this Article Two.

                                      -5-
   13

                  (e)      No Fractional Park Shares.

                           (i)      No certificates or scrip representing
                                    fractional Park Shares shall be issued upon
                                    the surrender for exchange of SNB
                                    Certificates evidencing SNB Shares, and such
                                    fractional Park Share interests will not
                                    entitle the owner thereof to vote or to any
                                    rights of a shareholder of the Surviving
                                    Corporation.

                           (ii)     Each holder of SNB Shares who would
                                    otherwise be entitled to receive a
                                    fractional Park Share shall receive from the
                                    Exchange Agent an amount of cash equal to
                                    the product obtained by multiplying (a) the
                                    fractional Park Share interest to which such
                                    holder (after taking into account all SNB
                                    Shares held at the Effective Time by such
                                    holder) would otherwise be entitled by (b)
                                    the Average Closing Price of Park Shares (as
                                    defined below in Section 2.02(e)(iii)
                                    below). No interest shall be payable with
                                    respect to such cash payment.

                           (iii)    The "Average Closing Price of Park Shares"
                                    shall mean the average of the closing sale
                                    prices of a Park Share on the American Stock
                                    Exchange ("AMEX") (as reported in The Wall
                                    Street Journal or, if not reported therein,
                                    in another authoritative source) during the
                                    period of 20 trading days (as hereinafter
                                    defined in this Section 2.02(e)(iii)) ending
                                    on the trading day prior to the date on
                                    which the waiting period expires following
                                    the last required approval of a Governmental
                                    Authority (as defined in Section 3.01(p)
                                    below) with respect to the Merger. As used
                                    in this Agreement, "trading days" shall mean
                                    days on which actual trades of Park Shares
                                    occur.

                  (f)      Termination of Exchange Fund. Any portion of the
                           Exchange Fund which remains undistributed to the
                           shareholders of SNB for six months after the
                           Effective Time shall be delivered to the Surviving
                           Corporation, upon demand, and any shareholders of SNB
                           who have not theretofore complied with this Article
                           Two shall thereafter look only to the Surviving
                           Corporation for payment of their claim for Park
                           Shares, any cash in lieu of fractional Park Share
                           interest and any dividends or distributions with
                           respect to Park Shares, in each case without
                           interest.

                  (g)      No Liability. None of Park, SNB, the Exchange Agent
                           or the Surviving Corporation shall be liable to any
                           former holder of SNB Shares for Park Shares (or
                           dividends or distributions with respect thereto) or
                           cash in lieu of fractional Park Share interest
                           delivered to a public official pursuant to any
                           applicable abandoned property, escheat or similar
                           law.

                                      -6-
   14

                  (h)      Share Transfer Books. Unless otherwise required by
                           Section 1701.85 of the OGCL, after the Effective Time
                           there shall be no further registration of transfers
                           on the share transfer books of the Surviving
                           Corporation of the SNB Shares which were outstanding
                           immediately prior to the Effective Time.

                  (i)      Lost Certificates. If there shall be delivered to the
                           Exchange Agent by any person who is unable to produce
                           any SNB Certificate for SNB Shares for surrender to
                           the Exchange Agent in accordance with this Section
                           2.02:

                           (a)      Evidence to the satisfaction of the
                                    Surviving Corporation that such SNB
                                    Certificate has been lost, wrongfully taken,
                                    or destroyed;

                           (b)      Such security or indemnity as may be
                                    requested by the Surviving Corporation to
                                    save it harmless (which shall not include
                                    the requirement to obtain a third party bond
                                    or surety); and

                           (c)      Evidence to the satisfaction of the
                                    Surviving Corporation that such person was
                                    the owner of the SNB Shares theretofore
                                    represented by each such SNB Certificate
                                    claimed by him to be lost, wrongfully taken
                                    or destroyed and that he is the person who
                                    would be entitled to present such SNB
                                    Certificate for exchange pursuant to this
                                    Agreement;

                           then the Exchange Agent, in the absence of actual
                           notice to it that any SNB Shares theretofore
                           represented by any such SNB Certificate have been
                           acquired by a bona fide purchaser, shall deliver to
                           such person the Park Shares (and cash in lieu of
                           fractional Park Share interests) that such person
                           would have been entitled to receive upon surrender of
                           each such lost, wrongfully taken or destroyed SNB
                           Certificate.

                  (j)      Waiver. The Surviving Corporation may from time to
                           time, in the case of one or more persons, waive one
                           or more of the rights provided to it in this Article
                           Two to withhold certain payments, deliveries and
                           distributions; and no such waiver shall constitute a
                           waiver of its rights thereafter to withhold any such
                           payment, delivery or distribution in the case of any
                           person.

                  (k)      SNB Dissenters' Rights. Anything contained in this
                           Agreement or elsewhere to the contrary
                           notwithstanding, if any holder of an outstanding SNB
                           Share shall properly exercise dissenters' rights with
                           respect thereto in accordance with Section 1701.85 of
                           the OGCL (a "Dissenting Share"), then:

                                      -7-
   15

                           (i)      Each such Dissenting Share shall
                                    nevertheless be deemed to be extinguished at
                                    the Effective Time as provided elsewhere in
                                    this Agreement;

                           (ii)     Each person perfecting such dissenter's
                                    rights shall thereafter have only such
                                    rights (and shall have such obligations) as
                                    are provided in Section 1701.85 of the OGCL,
                                    and the Surviving Corporation shall not be
                                    required to deliver any Park Shares or cash
                                    payments to such person in substitution for
                                    each such Dissenting Share in accordance
                                    with this Agreement; provided, however, that
                                    if any such person shall have failed to
                                    perfect or shall withdraw or lose such
                                    holder's rights under division (D) of
                                    Section 1701.85 of the OGCL, each such
                                    holder's Dissenting Shares shall thereupon
                                    be deemed to have been converted as of the
                                    Effective Time into the right to receive
                                    Park Shares and cash in lieu of fractional
                                    Park Share interests in accordance with the
                                    Exchange Ratio, without any interest
                                    thereon, pursuant to Section 2.01.

                           No holder of Dissenting Shares shall be entitled to
                           submit a letter of transmittal, and any letter of
                           transmittal submitted by a holder of Dissenting
                           Shares shall be invalid.

                  (l)      Changes in Park Shares. In the event Park changes (or
                           establishes a record date for changing) the number of
                           Park Shares issued and outstanding prior to the
                           Effective Time as a result of a share split, share
                           dividend, recapitalization or similar transaction
                           with respect to the outstanding Park Shares and the
                           record date therefor shall be prior to the Effective
                           Time, or exchanges the Park Shares for a different
                           number or kind of shares or securities or is involved
                           in any transaction resulting in any of the foregoing,
                           the Exchange Ratio shall be proportionately adjusted.

                  2.03.    PARK SHARES

                  All Park Shares, if any, that are owned directly by SNB shall
become treasury shares of the Surviving Corporation. Each other Park Share
issued and outstanding immediately prior to the Effective Time shall continue to
be issued and outstanding and unaffected by the Merger. Each Park Share held by
Park in treasury shall continue to be a treasury share of the Surviving
Corporation.

                                      -8-
   16

                                  ARTICLE THREE
                      REPRESENTATIONS AND WARRANTIES OF SNB

                  3.01. REPRESENTATIONS AND WARRANTIES OF SNB

                  SNB hereby represents and warrants to Park that:

                  (a)      Corporate Status. SNB is an Ohio corporation and a
                           bank holding company registered under the Bank
                           Holding Company Act of 1956, as amended (the "BHC
                           Act"); is duly organized, validly existing and in
                           good standing under the laws of Ohio; and has the
                           full corporate power and authority to own its
                           property, to carry on its business as presently
                           conducted, and to enter into and, subject to the
                           required adoption of this Agreement by the SNB
                           shareholders and the obtaining of appropriate
                           regulatory approvals, perform its obligations under
                           this Agreement and consummate the transactions
                           contemplated by this Agreement. Copies of the
                           articles of incorporation and regulations of SNB and
                           all amendments thereto have been delivered to Park by
                           SNB in Section 3.01(a) of the SNB Disclosure
                           Schedule. Second National Bank (the "Bank") is the
                           only Subsidiary (as that term is defined in Section
                           3.01(c)). The Bank is a national banking association;
                           is duly organized, validly existing and in good
                           standing under the laws of the United States of
                           America; and has the full corporate power and
                           authority to own its property, and to carry on its
                           business as presently conducted. Neither SNB nor the
                           Bank is qualified to do business in any other
                           jurisdiction or is required to be qualified to do
                           business in any other jurisdiction except where the
                           failure to be so qualified would not have a material
                           adverse effect on SNB or the Bank. Copies of the
                           articles of association and by-laws of the Bank and
                           all amendments thereto have been delivered to Park in
                           Section 3.01(a) of the SNB Disclosure Schedule. As
                           used in this Agreement, (i) any reference to any
                           event, change or effect being "material" with respect
                           to any entity means an event, change or effect which
                           is material in relation to the condition (financial
                           or otherwise), properties, assets, liabilities,
                           businesses or results of operations of such entity
                           and its subsidiaries taken as a whole and (ii) the
                           term "material adverse effect" means, with respect to
                           an entity, a material adverse effect on the condition
                           (financial or otherwise), properties, assets,
                           liabilities, businesses or results of operations of
                           such entity and its subsidiaries taken as a whole or
                           on the ability of such entity to perform without
                           material delay its obligations under this Agreement
                           or consummate the Merger and the other material
                           transactions contemplated by this Agreement.

                                      -9-
   17

                  (b)      Capitalization of SNB.

                           (i)      The authorized capital of SNB consists
                                    solely of 750,000 common shares, without par
                                    value, all of which are SNB Shares, of which
                                    155,626 SNB Shares are issued and
                                    outstanding and 10,522 SNB Shares are held
                                    in treasury by SNB. All outstanding SNB
                                    Shares have been duly authorized and are
                                    validly issued, fully paid and
                                    non-assessable, and were not issued in
                                    violation of the preemptive rights of any
                                    person. All SNB Shares issued within the
                                    last three years have been issued in
                                    compliance with all applicable federal and
                                    state securities laws. As of the date of
                                    this Agreement, 32 SNB Shares were reserved
                                    for issuance upon the exercise of
                                    outstanding stock options (the "SNB Stock
                                    Options") granted under the SNB Corp.
                                    Nonqualified Stock Option Plan (the "SNB
                                    Stock Option Plan"). SNB has furnished to
                                    Park a true, complete and correct copy of
                                    the SNB Stock Option Plan and a list of all
                                    participants therein which identifies the
                                    number of SNB Shares subject to SNB Stock
                                    Options held by each participant, the
                                    exercise price or prices of such SNB Stock
                                    Options and the dates each SNB Stock Option
                                    was granted, becomes exercisable and
                                    expires.

                           (ii)     As of the date of this Agreement, except for
                                    this Agreement and the SNB Stock Options,
                                    there are no options, warrants, calls,
                                    rights, commitments or agreements of any
                                    character to which SNB is a party or by
                                    which it is bound obligating SNB to issue,
                                    deliver or sell, or cause to be issued,
                                    delivered or sold, any additional SNB Shares
                                    or obligating SNB to grant, extend or enter
                                    into any such option, warrant, call, right,
                                    commitment or agreement. As of the date of
                                    this Agreement, there are no outstanding
                                    contractual obligations of SNB to
                                    repurchase, redeem or otherwise acquire any
                                    SNB Shares except for such obligations
                                    arising under the SNB Stock Option Plan.

                           (iii)    Except as disclosed in Section 3.01(b) of
                                    the SNB Disclosure Schedule, since September
                                    30, 1997, SNB has not (A) issued or
                                    permitted to be issued any SNB Shares, or
                                    securities exercisable for or convertible
                                    into SNB Shares, other than the SNB Stock
                                    Options granted prior to the date hereof
                                    under the SNB Stock Option Plan; (B)
                                    repurchased, redeemed or otherwise acquired,
                                    directly or indirectly through the Bank or
                                    otherwise, any SNB Shares; or (C) declared,
                                    set aside, made or paid to the shareholders
                                    of SNB dividends or other distributions on
                                    the outstanding SNB Shares, other than
                                    regular semi-annual cash dividends on the
                                    SNB

                                      -10-
   18

                                    Shares at a rate not in excess of the
                                    regular semi-annual cash dividends most
                                    recently declared by SNB prior to the date
                                    of this Agreement.

                  (c)      Subsidiaries. The Bank is the only Subsidiary of SNB.
                           SNB owns of record and beneficially all of the issued
                           and outstanding equity securities of the Bank. There
                           are no options, warrants, calls, rights, commitments
                           or agreements of any character to which SNB or the
                           Bank is a party or by which either of them is bound
                           obligating the Bank to issue, deliver or sell, or
                           cause to be issued, delivered or sold, additional
                           equity securities of the Bank (other than to SNB) or
                           obligating SNB or the Bank to grant, extend or enter
                           into any such option, warrant, call, right,
                           commitment or agreement. There are no contracts,
                           commitments, understandings or arrangements relating
                           to SNB's rights to vote or to dispose of the equity
                           securities of the Bank which it owns. All of the
                           equity securities of the Bank held by SNB are fully
                           paid and non-assessable (except pursuant to 12 U.S.C.
                           Section 55) and are owned by SNB free and clear of
                           any charge, mortgage, pledge, security interest,
                           hypothecation, restriction, claim, option, lien,
                           encumbrance or interest of any persons whatsoever.
                           SNB does not own beneficially, directly or
                           indirectly, any equity securities or similar
                           interests of any person, or any interest in a
                           partnership or joint venture of any kind, other than
                           the Bank.

                           For purposes of this Agreement, "Subsidiary" has the
                           meaning ascribed to it in Rule 1-02 of Regulation S-X
                           promulgated by the Securities and Exchange Commission
                           (the "SEC").

                  (d)      Corporate Proceedings. All corporate proceedings of
                           SNB necessary to authorize the execution, delivery
                           and performance of this Agreement and the
                           consummation of the transactions contemplated hereby
                           by SNB have been duly and validly taken, except for
                           the adoption of this Agreement by the holders of a
                           majority of the outstanding SNB Shares entitled to
                           vote thereon (which is the only required shareholder
                           vote thereon). The Board of Directors of SNB has
                           recommended adoption of this Agreement by the
                           shareholders of SNB and directed that this Agreement
                           be submitted to the shareholders of SNB for their
                           approval. This Agreement has been validly executed
                           and delivered by duly authorized officers of SNB. The
                           Board of Directors of SNB has received the written
                           opinion of McDonald Investments, Inc. to the effect
                           that as of the date hereof, the consideration to be
                           received by the holders of SNB Shares in the Merger
                           is fair to the holders of SNB Shares from a financial
                           point of view.

                  (e)      Authorized and Effective Agreement. This Agreement
                           constitutes the legal, valid and binding obligation
                           of SNB, enforceable against SNB in

                                      -11-
   19

                           accordance with its terms, except as the same may be
                           limited by bankruptcy, insolvency, reorganization,
                           moratorium, fraudulent conveyance and other similar
                           laws relating to or affecting the enforcement of
                           creditors' rights generally, by general equitable
                           principles (regardless of whether enforceability is
                           considered in a proceeding in equity or at law) and
                           by an implied covenant of good faith and fair
                           dealing. SNB has the absolute and unrestricted right,
                           power, authority and capacity to execute and deliver
                           this Agreement and, subject to the required adoption
                           of this Agreement by the SNB shareholders, the
                           obtaining of appropriate regulatory approvals and the
                           expiration of applicable regulatory waiting periods,
                           to perform its obligations under this Agreement.

                  (f)      Financial Statements of SNB. SNB has furnished to
                           Park accurate and complete copies of consolidated
                           financial statements of SNB consisting of (i)
                           consolidated balance sheets as of December 31, 1998
                           and 1997, and the related consolidated statements of
                           income, changes in shareholders' equity and cash
                           flows for the three years ended December 31, 1998,
                           including accompanying notes and the report thereon
                           of Crowe, Chizek and Company LLP and (ii) the
                           unaudited consolidated balance sheets as of September
                           30, 1999 (the "SNB Balance Sheet Date") and
                           consolidated statements of income and cash flows for
                           the nine months then ended (collectively, all of such
                           consolidated financial statements are referred to as
                           the "SNB Financial Statements"). The SNB Financial
                           Statements were prepared in accordance with generally
                           accepted accounting principles ("GAAP") applied on a
                           consistent basis and present fairly, in all material
                           respects, the consolidated financial condition of SNB
                           at the dates, and the consolidated results of
                           operations and cash flows for the periods, stated
                           therein; subject, in the case of the interim
                           statements, to normal year-end audit adjustments
                           which are not expected to be, individually or in the
                           aggregate, materially adverse to SNB and the absence
                           of full footnotes.

                  (g)      Absence of Undisclosed Liabilities. Except as
                           disclosed in Section 3.01(g) of the SNB Disclosure
                           Schedule, neither SNB nor the Bank had any debt,
                           obligation, guarantee or liability at the SNB Balance
                           Sheet Date, whether absolute, accrued, contingent or
                           otherwise that would be required to be reflected on
                           and reserved against in the SNB Financial Statements
                           or in the notes thereto except for debts,
                           obligations, guarantees or liabilities which,
                           individually or in the aggregate, do not exceed
                           $50,000. Except as disclosed in Section 3.01(g) of
                           the SNB Disclosure Schedule, all debts, liabilities,
                           guarantees and obligations of SNB and the Bank
                           incurred since the SNB Balance Sheet Date have been
                           incurred in the ordinary course of business and are
                           usual and normal in amount both individually and in
                           the aggregate. Except as disclosed in Section 3.01(g)
                           of the SNB Disclosure

                                      -12-
   20

                           Schedule, neither SNB nor the Bank is in material
                           default or breach of any material agreement to which
                           SNB or the Bank is a party.

                  (h)      Absence of Changes. Except as set forth in Section
                           3.01(h) of the SNB Disclosure Schedule, since the SNB
                           Balance Sheet Date: (i) there has not been any
                           material adverse change in the business, operations,
                           assets or financial condition of SNB and the Bank
                           taken as a whole, and, to the knowledge of SNB, no
                           fact or condition exists which SNB believes will
                           cause such a material adverse change in the future;
                           and (ii) SNB has not taken or permitted any of the
                           actions described in Section 5.01(b) of this
                           Agreement.

                  (i)      Loan Documentation. To the knowledge of SNB, the
                           documentation ("Loan Documentation") governing or
                           relating to the loan and credit-related assets ("Loan
                           Assets") representing the loan portfolio of the Bank
                           is legally sufficient for the purposes intended
                           thereby and creates enforceable rights of the Bank in
                           accordance with the terms of such Loan Documentation,
                           subject to applicable bankruptcy, insolvency,
                           reorganization, moratorium, fraudulent conveyance and
                           other similar laws relating to or affecting the
                           enforcement of creditors' rights generally, by
                           general equitable principles (regardless of whether
                           enforceability is considered in a proceeding in
                           equity or at law) and by an implied covenant of good
                           faith and fair dealing. Except as set forth in
                           Section 3.01(i) of the SNB Disclosure Schedule, no
                           debtor under any of the Loan Documentation has
                           asserted any claim or defense with respect to the
                           subject matter thereof. Except as set forth in
                           Section 3.01(i) of the SNB Disclosure Schedule, the
                           Bank is not a party to a loan, including any loan
                           guaranty, with any director, executive officer or
                           five percent (5%) shareholder of SNB or the Bank or
                           any person, corporation or enterprise controlling,
                           controlled by or under common control with either SNB
                           or the Bank. All loans and extensions of credit that
                           have been made by the Bank and that are subject
                           either to Sections 22(g) or 22(h) of the Federal
                           Reserve Act, as amended, or to 12 C.F.R. Part 215
                           (Regulation O), comply therewith.

                  (j)      Allowance for Loan Losses. Except as set forth in
                           Section 3.01(j) of the SNB Disclosure Schedule, there
                           is no loan which was made by the Bank and which is
                           reflected as an asset of the Bank on the SNB
                           Financial Statements that (i) is 90 days or more
                           delinquent or (ii) has been classified by examiners
                           (regulatory or internal) as "Substandard," "Doubtful"
                           or "Loss." The allowance for loan losses reflected on
                           the SNB Financial Statements has been determined in
                           accordance with GAAP and in accordance with all rules
                           and regulations applicable to SNB and the Bank and is
                           adequate in all material respects. SNB has considered
                           all potential

                                      -13-
   21

                           losses known to SNB to the best of its knowledge in
                           establishing the current allowance for loan losses
                           for the Bank, other than such losses that if incurred
                           would not have a material adverse effect on SNB or
                           the Bank.

                  (k)      Reports and Records. SNB and the Bank have filed all
                           reports and maintained all records required to be
                           filed or maintained by them under the rules and
                           regulations of the Board of Governors of the Federal
                           Reserve System (the "Federal Reserve") and the Office
                           of the Comptroller of the Currency (the "OCC"),
                           except for such reports and records the failure to
                           file or maintain would not reasonably be expected to
                           have a material adverse effect on SNB and the Bank.
                           All such documents and reports complied in all
                           material respects with applicable requirements of law
                           and rules and regulations in effect at the time such
                           documents and reports were filed and contained in all
                           material respects the information required to be
                           stated therein. None of such documents or reports,
                           when filed, contained any untrue statement of a
                           material fact or omitted to state a material fact
                           required to be stated therein or necessary in order
                           to make the statements therein, in light of the
                           circumstances under which they were made, not
                           misleading.

                  (l)      Taxes. Except as set forth in Section 3.01(l) of the
                           SNB Disclosure Letter, SNB and the Bank have timely
                           filed all returns, statements, reports and forms
                           (including elections, declarations, disclosures,
                           schedules, estimates and information returns)
                           (collectively, the "Tax Returns") with respect to all
                           federal, state, local and foreign income, gross
                           income, gross receipts, gains, premium, sales, use,
                           ad valorem, transfer, franchise, profits,
                           withholding, payroll, employment, excise, severance,
                           stamp, occupancy, license, lease, environmental,
                           customs, duties, property, windfall profits and all
                           other taxes (including any interest, penalties or
                           additions to tax with respect thereto, individually,
                           a "Tax" and, collectively, "Taxes") required to be
                           filed with the appropriate tax authority through the
                           date of this Agreement. Such Tax Returns are and will
                           be true, correct and complete in all material
                           respects. SNB and the Bank have paid and discharged
                           all Taxes due from them, other than such Taxes that
                           are adequately reserved as shown on the SNB Financial
                           Statements or have arisen in the ordinary course of
                           business since the SNB Balance Sheet Date. Neither
                           the Internal Revenue Service (the "IRS") nor any
                           other taxing agency or authority, domestic or
                           foreign, has asserted, is now asserting or, to the
                           knowledge of SNB, is threatening to assert against
                           SNB or the Bank any deficiency or claim for
                           additional Taxes. There are no unexpired waivers by
                           SNB or the Bank of any statute of limitations with
                           respect to Taxes. The accruals and reserves for Taxes
                           reflected in the SNB Financial Statements are
                           adequate for the periods covered. SNB and the Bank
                           have withheld or collected and paid over to the
                           appropriate

                                      -14-
   22

                           governmental authorities or are properly holding for
                           such payment all Taxes required by law to be withheld
                           or collected. There are no liens for Taxes upon the
                           assets of SNB or the Bank, other than liens for
                           current Taxes not yet due and payable. Neither SNB
                           nor the Bank has agreed to make, or is required to
                           make, any adjustment under Section 481(a) of the
                           Code. Except as set forth in Section 3.01(l) of the
                           SNB Disclosure Letter, or as may be caused by any
                           agreement entered into by Park, neither SNB nor the
                           Bank is a party to any agreement, contract,
                           arrangement or plan that has resulted, or could
                           result, individually or in the aggregate, in the
                           payment of "excess parachute payments" within the
                           meaning of Section 280G of the Code. Neither SNB nor
                           the Bank has ever been a member of an affiliated
                           group of corporations, within the meaning of Section
                           1504 of the Code, other than an affiliated group of
                           which SNB is or was the common parent corporation. No
                           Tax is required to be withheld pursuant to Section
                           1445 of the Code as a result of the transactions
                           contemplated by this Agreement.

                  (m)      Property and Title. Section 3.01(m) of the SNB
                           Disclosure Schedule lists and describes all real
                           property, and any leasehold interest in real
                           property, owned or held by SNB or the Bank and used
                           in the businesses of SNB or the Bank (collectively,
                           the "SNB Real Properties"). The SNB Real Properties
                           constitute all of the real property and interests in
                           real property used in the businesses of SNB and the
                           Bank. Copies of all leases of real property to which
                           SNB or the Bank is a party have been provided to Park
                           in Section 3.01(m) of the SNB Disclosure Schedule.
                           Such leasehold interests have not been assigned or
                           subleased. All SNB Real Properties which are owned by
                           SNB or the Bank are free and clear of all mortgages,
                           liens, security interests, defects, encumbrances,
                           easements, restrictions, reservations, conditions,
                           covenants, agreements, encroachments, rights of way
                           and zoning laws, except (i) those set forth in the
                           SNB Financial Statements or Section 3.01(m) of the
                           SNB Disclosure Schedule; (ii) easements,
                           restrictions, reservations, conditions, covenants,
                           rights of way, zoning laws and other defects and
                           irregularities in title and encumbrances which do not
                           materially impair the use thereof for the purposes
                           for which they are held; and (iii) the lien of
                           current taxes not yet due and payable. SNB and the
                           Bank own, and are in rightful possession of, and have
                           good title to, all of the other assets indicated in
                           the SNB Financial Statements as being owned by SNB or
                           the Bank, free and clear of any charge, mortgage,
                           pledge, security interest, hypothecation,
                           restriction, claim, option, lien, encumbrance or
                           interest of any persons whatsoever except those
                           described in the SNB Financial Statements or Section
                           3.01(m) of the SNB Disclosure Schedule and except for
                           those assets disposed of in the ordinary course of
                           business consistent with past practices. All of the
                           assets of SNB and the Bank are in operating

                                      -15-
   23

                           condition, except for normal maintenance and routine
                           repairs, and are adequate to continue to conduct the
                           businesses of SNB and the Bank as such businesses are
                           presently being conducted.

                  (n)      Legal Proceedings. Except as set forth in Section
                           3.01(n) of the SNB Disclosure Schedule, there are no
                           actions, suits, proceedings, claims or investigations
                           pending or, to the knowledge of SNB and the Bank,
                           threatened in any court, before any governmental
                           agency or instrumentality or in any arbitration
                           proceeding (i) against or by SNB or the Bank; or (ii)
                           against or by SNB or the Bank which would prevent the
                           consummation of this Agreement or of any of the
                           transactions contemplated hereby or declare the same
                           to be unlawful or cause the rescission thereof.

                  (o)      Regulatory Matters. Neither SNB nor the Bank nor the
                           respective properties of SNB or the Bank are parties
                           to or subject to any order, judgment, decree,
                           agreement, memorandum of understanding or similar
                           arrangement with, or a commitment letter or similar
                           submission to, or extraordinary supervisory letter
                           from, any court or federal or state governmental
                           agency or authority, including any such agency or
                           authority charged with the supervision or regulation
                           of financial institutions (or their holding
                           companies) or issuers of securities or engaged in the
                           insurance of deposit (including, without limitation,
                           the OCC, the Federal Reserve, the SEC and the Federal
                           Deposit Insurance Corporation (the "FDIC")) or the
                           supervision or regulation of SNB or the Bank
                           (collectively, the "Regulatory Authorities"). Neither
                           SNB nor the Bank has been advised by any Regulatory
                           Authority that such Regulatory Authority is
                           contemplating issuing or requesting (or is
                           considering the appropriateness of issuing or
                           requesting) any such order, judgment, decree,
                           agreement, memorandum of understanding, commitment
                           letter, supervisory letter or similar submission.

                  (p)      No Conflict. Subject to the required adoption of this
                           Agreement by the shareholders of SNB, receipt of the
                           required regulatory approvals, expiration of
                           applicable regulatory waiting periods, and required
                           filings under federal and state securities laws, the
                           execution, delivery and performance of this
                           Agreement, and the consummation of the transactions
                           contemplated by this Agreement, by SNB do not and
                           will not (i) conflict with, or result in a violation
                           of, or result in the breach of or a default (or which
                           with notice or lapse of time would result in a
                           default) under, any provision of: (A) any federal,
                           state or local law, regulation, ordinance, order,
                           rule or administrative ruling of any administrative
                           agency or commission or other federal, state or local
                           governmental authority or instrumentality (each, a
                           "Governmental Authority") applicable to SNB or

                                      -16-

   24

                           the Bank or any of their respective properties; (B)
                           the articles of incorporation or regulations of SNB
                           or the articles of association or by-laws of the
                           Bank; (C) any material agreement, indenture or
                           instrument to which SNB or the Bank is a party or by
                           which it or its properties or assets may be bound; or
                           (D) any order, judgment, writ, injunction or decree
                           of any court, arbitration panel or any Governmental
                           Authority applicable to SNB or the Bank; (ii) result
                           in the creation or acceleration of any security
                           interest, mortgage, option, claim, lien, charge or
                           encumbrance upon any property of SNB or the Bank; or
                           (iii) violate the terms or conditions of, or result
                           in the cancellation, modification, revocation or
                           suspension of, any material license, approval,
                           certificate, permit or authorization held by SNB or
                           the Bank.

                  (q)      Brokers, Finders and Others. Except for the fee paid
                           or payable to McDonald Investments, Inc., there are
                           no fees or commissions of any sort whatsoever claimed
                           by, or payable by SNB or the Bank to, any broker,
                           finder, intermediary or any other similar person in
                           connection with effecting this Agreement or the
                           transactions contemplated hereby.

                  (r)      Employment Agreements. Except as disclosed in Section
                           3.01(r) of the SNB Disclosure Schedule, neither SNB
                           nor the Bank is a party to any employment, change in
                           control, severance or consulting agreement not
                           terminable at will. Neither SNB nor the Bank is a
                           party to, bound by or negotiating, any collective
                           bargaining agreement, nor are any of their respective
                           employees represented by any labor union or similar
                           organization. SNB and the Bank are in compliance in
                           all material respects with all applicable laws
                           respecting employment and employment practices, terms
                           and conditions of employment and wages and hours, and
                           neither SNB nor the Bank has engaged in any unfair
                           labor practice.

                  (s)      Employee Benefit Plans.

                           (i)      Section 3.01(s)(i) of the SNB Disclosure
                                    Schedule contains a complete and accurate
                                    list of all bonus, incentive, deferred
                                    compensation, pension (including, without
                                    limitation, Pension Plans defined below),
                                    retirement, profit-sharing, thrift, savings,
                                    employee stock ownership, stock bonus, stock
                                    purchase, restricted stock, stock option,
                                    severance, welfare (including, without
                                    limitation, "welfare plans" within the
                                    meaning of Section 3(1) of the Employee
                                    Retirement Income Security Act of 1974, as
                                    amended ("ERISA")), fringe benefit plans,
                                    employment or severance agreements and all
                                    similar practices, policies and arrangements
                                    maintained or contributed to (currently or
                                    within the last six years) by (A) SNB or the
                                    Bank and in which any employee

                                      -17-

   25

                                    or former employee (the "Employees"),
                                    consultant or former consultant (the
                                    "Consultants"), officer or former officer
                                    (the "Officers"), or director or former
                                    director (the "Directors") of SNB or the
                                    Bank participates or to which any such
                                    Employees, Consultants, Officers or
                                    Directors either participate or are a party
                                    or (B) any ERISA Affiliate (as defined
                                    below) (collectively, the "Compensation and
                                    Benefit Plans"). Neither SNB nor the Bank
                                    has any commitment to create any additional
                                    Compensation and Benefit Plan or to modify
                                    or change any existing Compensation and
                                    Benefit Plan, except as otherwise
                                    contemplated by Sections 5.08 and 6.02 of
                                    this Agreement.

                           (ii)     Each Compensation and Benefit Plan has been
                                    operated and administered in all material
                                    respects in accordance with its terms and
                                    with applicable law, including, but not
                                    limited to, ERISA, the Code, the Securities
                                    Act (as defined in Section 3.01(u)), the
                                    Exchange Act (as defined in Section
                                    4.01(i)), the Age Discrimination in
                                    Employment Act, or any regulations or rules
                                    promulgated thereunder, and all filings,
                                    disclosures and notices required by ERISA,
                                    the Code, the Securities Act, the Exchange
                                    Act, the Age Discrimination in Employment
                                    Act and any other applicable law have been
                                    timely made. Each Compensation and Benefit
                                    Plan which is an "employee pension benefit
                                    plan" within the meaning of Section 3(2) of
                                    ERISA (a "Pension Plan") and which is
                                    intended to be qualified under Section
                                    401(a) of the Code has received a favorable
                                    determination letter (including a
                                    determination that the related trust under
                                    such Compensation and Benefit Plan is exempt
                                    from tax under Section 501(a) of the Code)
                                    from the IRS and SNB is not aware of any
                                    circumstances likely to result in revocation
                                    of any such favorable determination letter.
                                    There is no material pending or, to the
                                    knowledge of SNB, threatened legal action,
                                    suit or claim relating to the Compensation
                                    and Benefit Plans other than routine claims
                                    for benefits thereunder. Neither SNB nor the
                                    Bank has engaged in a transaction, or
                                    omitted to take any action, with respect to
                                    any Compensation and Benefit Plan that would
                                    reasonably be expected to subject SNB or the
                                    Bank to a tax or penalty imposed by either
                                    Section 4975 of the Code or Section 502 of
                                    ERISA, assuming for purposes of Section 4975
                                    of the Code that the taxable period of any
                                    such transaction expired as of the date
                                    hereof.

                           (iii)    No liability (other than for payment of
                                    premiums to the Pension Benefit Guaranty
                                    Corporation ("PBGC") which have been made or
                                    will be made on a timely basis) under Title
                                    IV of ERISA has been

                                      -18-
   26

                                    or is expected to be incurred by SNB or the
                                    Bank with respect to any ongoing, frozen or
                                    terminated "single-employer plan," within
                                    the meaning of Section 4001(a)(15) of ERISA,
                                    currently or formerly maintained by any of
                                    them, or any single-employer plan of any
                                    entity (an "ERISA Affiliate Plan") which is
                                    considered one employer with SNB under
                                    Section 4001(a)(14) of ERISA or Section
                                    414(b), (c) or (m) of the Code (an "ERISA
                                    Affiliate"). None of SNB, the Bank or any
                                    ERISA Affiliate has contributed, or has been
                                    obligated to contribute, to a multiemployer
                                    plan under Subtitle E of Title IV of ERISA
                                    (as defined in ERISA Sections 3(37)(A) and
                                    4001(a)(3)) at any time since September 26,
                                    1980. No notice of a "reportable event",
                                    within the meaning of Section 4043 of ERISA,
                                    for which the 30-day reporting requirement
                                    has not been waived, has been required to be
                                    filed for any Compensation and Benefit Plan
                                    or by any ERISA Affiliate Plan within the
                                    12-month period ending on the date hereof,
                                    and no such notice will be required to be
                                    filed as a result of the transactions
                                    contemplated by this Agreement. The PBGC has
                                    not instituted proceedings to terminate any
                                    Pension Plan or ERISA Affiliate Plan and, to
                                    SNB's knowledge, no condition exists that
                                    presents a material risk that such
                                    proceedings will be instituted. There is no
                                    pending investigation or enforcement action
                                    by the PBGC, the Department of Labor (the
                                    "DOL"), the IRS or any other Governmental
                                    Authority with respect to any Compensation
                                    and Benefit Plan. Under each Pension Plan
                                    and ERISA Affiliate Plan, as of the date of
                                    the most recent actuarial valuation
                                    performed prior to the date of this
                                    Agreement, the actuarially determined
                                    present value of all "benefit liabilities",
                                    within the meaning of Section 4001(a)(16) of
                                    ERISA (as determined on the basis of the
                                    actuarial assumptions contained in such
                                    actuarial valuation of such Pension Plan or
                                    ERISA Affiliate Plan), did not exceed the
                                    then current value of the assets of such
                                    Pension Plan or ERISA Affiliate Plan and
                                    since such date there has been neither an
                                    adverse change in the financial condition of
                                    such Pension Plan or ERISA Affiliate Plan
                                    nor any amendment or other change to such
                                    Pension Plan or ERISA Affiliate Plan that
                                    would increase the amount of benefits
                                    thereunder which reasonably could be
                                    expected to change such result.

                           (iv)     All contributions required to be made under
                                    the terms of any Compensation and Benefit
                                    Plan or ERISA Affiliate Plan or any employee
                                    benefit arrangements under any collective
                                    bargaining agreement to which SNB or the
                                    Bank is a party have been timely made or
                                    have been reflected on the SNB Financial
                                    Statements.

                                      -19-
   27

                                    Neither any Pension Plan nor any ERISA
                                    Affiliate Plan has an "accumulated funding
                                    deficiency" (whether or not waived) within
                                    the meaning of Section 412 of the Code or
                                    Section 302 of ERISA and all required
                                    payments to the PBGC with respect to each
                                    Pension Plan or ERISA Affiliate Plan have
                                    been made on or before their due dates. None
                                    of SNB, the Bank or any ERISA Affiliate (x)
                                    has provided, or would reasonably be
                                    expected to be required to provide, security
                                    to any Pension Plan or to any ERISA
                                    Affiliate Plan pursuant to Section
                                    401(a)(29) of the Code, and (y) has taken
                                    any action, or omitted to take any action,
                                    that has resulted, or would reasonably be
                                    expected to result, in the imposition of a
                                    lien under Section 412(n) of the Code or
                                    pursuant to ERISA.

                           (v)      Except as disclosed in Section 3.01(s)(v) of
                                    the SNB Disclosure Schedule, neither SNB nor
                                    the Bank has any obligations to provide
                                    retiree health and life insurance or other
                                    retiree death benefits under any
                                    Compensation and Benefit Plan, other than
                                    benefits mandated by Section 4980B of the
                                    Code. Except as disclosed in Section
                                    3.01(s)(v) of the SNB Disclosure Schedule,
                                    there has been no communication to Employees
                                    by SNB or the Bank that would reasonably be
                                    expected to promise or guarantee such
                                    Employees retiree health or life insurance
                                    or other retiree death benefits on a
                                    permanent basis.

                           (vi)     SNB and the Bank do not maintain any
                                    Compensation and Benefit Plans covering
                                    foreign Employees.

                           (vii)    With respect to each Compensation and
                                    Benefit Plan, if applicable, SNB has
                                    provided or made available to Park, true and
                                    complete copies of existing: (A)
                                    Compensation and Benefit Plan documents and
                                    amendments thereto; (B) trust instruments
                                    and insurance contracts; (C) two most recent
                                    Forms 5500 filed with the IRS; (D) most
                                    recent actuarial report and financial
                                    statement; (E) most recent summary plan
                                    description; (F) forms filed with the PBGC
                                    within the past year (other than for premium
                                    payments); (G) most recent determination
                                    letter issued by the IRS; (H) any Form 5310,
                                    Form 5310A, Form 5300 or Form 5330 filed
                                    within the past year with the IRS; and (I)
                                    most recent nondiscrimination tests
                                    performed under ERISA and the Code
                                    (including but not limited to Code Section
                                    401(k) and 401(m) tests).

                           (viii)   Except as disclosed on Section 3.01(s)(viii)
                                    of the SNB Disclosure Schedule, the
                                    consummation of the transactions
                                    contemplated by this Agreement would not,
                                    directly or indirectly (including,

                                      -20-
   28

                                    without limitation, as a result of any
                                    termination of employment prior to or
                                    following the Effective Time), reasonably be
                                    expected to (A) entitle any Employee,
                                    Consultant or Director to any payment
                                    (including severance pay or similar
                                    compensation) or any increase in
                                    compensation, (B) result in the vesting or
                                    acceleration of any benefits under any
                                    Compensation and Benefit Plan or (C) result
                                    in any material increase in benefits payable
                                    under any Compensation and Benefit Plan.

                           (ix)     Except as disclosed on Section 3.01(s)(ix)
                                    of the SNB Disclosure Schedule, neither SNB
                                    nor the Bank maintains any compensation
                                    plans, programs or arrangements the payments
                                    under which would not reasonably be expected
                                    to be deductible as a result of the
                                    limitations under Section 162(m) of the Code
                                    and the regulations issued thereunder.

                           (x)      Except as disclosed on Section 3.01(s)(x) of
                                    the SNB Disclosure Schedule, as a result,
                                    directly or indirectly, of the transactions
                                    contemplated by this Agreement (including,
                                    without limitation, as a result of any
                                    termination of employment prior to or
                                    following the Effective Time), none of Park,
                                    SNB or the Surviving Corporation, or any of
                                    their respective Subsidiaries will be
                                    obligated to make a payment that would be
                                    characterized as an "excess parachute
                                    payment" to an individual who is a
                                    "disqualified individual" (as such terms are
                                    defined in Section 280G of the Code) of SNB
                                    on a consolidated basis, without regard to
                                    whether such payment is reasonable
                                    compensation for personal services performed
                                    or to be performed in the future.

                  (t)      Compliance with Laws.  Each of SNB and the Bank:

                           (i)      has been in compliance with all applicable
                                    federal, state, local and foreign statutes,
                                    laws, regulations, ordinances, rules,
                                    judgments, orders or decrees applicable
                                    thereto or to the employees conducting such
                                    business, including, without limitation, the
                                    Equal Credit Opportunity Act, the Fair
                                    Housing Act, the Community Reinvestment Act,
                                    the Home Mortgage Disclosure Act and all
                                    other applicable fair lending laws and other
                                    laws relating to discriminatory business
                                    practices, except for failures to be in
                                    compliance which, individually or in the
                                    aggregate, have not had or would not
                                    reasonably be expected to have a material
                                    adverse effect on SNB or the Bank;

                                      -21-
   29

                           (ii)     has all permits, licenses, authorizations,
                                    orders and approvals of, and has made all
                                    filings, applications and registrations
                                    with, all Governmental Authorities that are
                                    required in order to permit it to own or
                                    lease its properties and to conduct its
                                    business as presently conducted, except
                                    where the failure to obtain any of the
                                    foregoing or to make any such filing,
                                    application or registration has not had or
                                    would not reasonably be expected to have a
                                    material adverse effect on SNB or the Bank;
                                    all such permits, licenses, certificates of
                                    authority, orders and approvals are in full
                                    force and effect and to SNB's knowledge, no
                                    suspension or cancellation of any of them is
                                    threatened; and

                           (iii)    has received no notification or
                                    communication from any Governmental
                                    Authority (A) asserting that SNB or the Bank
                                    is not in compliance with any of the
                                    statutes, regulations or ordinances which
                                    such Governmental Authority enforces or (B)
                                    threatening to revoke any license,
                                    franchise, permit or governmental
                                    authorization (nor, to SNB's knowledge, do
                                    any reasonable grounds for any of the
                                    foregoing exist), which has not been
                                    resolved to the satisfaction of the
                                    Governmental Authority which sent such
                                    notification or communication.

                  (u)      SNB Information. None of the information relating to
                           SNB and the Bank to be contained in (i) the
                           Registration Statement (as that term is defined in
                           Section 7.07 below) will, at the time the
                           Registration Statement is filed with the SEC and at
                           the time it becomes effective under the Securities
                           Act of 1933, as amended (the "Securities Act"),
                           contain any untrue statement of a material fact or
                           omit to state a material fact required to be stated
                           therein or necessary in order to make the statements
                           therein, in light of the circumstances under which
                           they were made, not misleading, and (ii) the SNB
                           Proxy Statement (as that term is defined in Section
                           5.03(b) below), as of the date such SNB Proxy
                           Statement is mailed to shareholders of SNB and up to
                           and including the date of the meeting of shareholders
                           to which such SNB Proxy Statement relates, will
                           contain any untrue statement of a material fact or
                           omit to state a material fact required to be stated
                           therein or necessary in order to make the statements
                           therein, in light of the circumstances under which
                           they were made, not misleading, provided that, in
                           each case, information as of a later date shall be
                           deemed to modify information as of an earlier date.
                           All information about SNB and the Bank included in
                           the Registration Statement and the SNB Proxy
                           Statement will be deemed to have been supplied by
                           SNB.

                                      -22-
   30

                  (v)      Insurance.

                           (i)      Section 3.01(v) of the SNB Disclosure
                                    Schedule sets forth all of the insurance
                                    policies, binders or bonds maintained by SNB
                                    or the Bank and a description of all claims
                                    filed by SNB or the Bank against the
                                    insurers of SNB and the Bank since December
                                    31, 1997. SNB and the Bank are insured with
                                    reputable insurers against such risks and in
                                    such amounts as the management of SNB
                                    reasonably has determined to be prudent in
                                    accordance with industry practices. All such
                                    insurance policies are in full force and
                                    effect; SNB and the Bank are not in material
                                    default thereunder; and all claims
                                    thereunder have been filed in due and timely
                                    fashion.

                           (ii)     The deposits of the Bank are insured by the
                                    FDIC in accordance with the Federal Deposit
                                    Insurance Act, and the Bank has paid all
                                    assessments and filed all reports required
                                    by the Federal Deposit Insurance Act.

                  (w)      Governmental Proceedings. No consent, approval,
                           authorization of, or registration, declaration or
                           filing with, any court, Governmental Authority or any
                           other third party is required to be made or obtained
                           by SNB or the Bank in connection with the execution,
                           delivery or performance by SNB of this Agreement or
                           the consummation by SNB of the transactions
                           contemplated hereby, except for (A) filings of
                           applications and notices, as applicable, with and the
                           approval of certain federal and state banking
                           authorities, (B) filings with the SEC and state
                           securities authorities and (C) the filing of the
                           appropriate certificate of merger with the Secretary
                           of State pursuant to the OGCL. As of the date hereof,
                           SNB is not aware of any reason why the approvals set
                           forth in Section 7.08 will not be received without
                           the imposition of a condition, restriction or
                           requirement of the type described in Section 7.08.

                  (x)      Contracts. Section 3.01(x) of the SNB Disclosure
                           Schedule sets forth a list, identifying by dates,
                           subject matter and parties, all contracts, agreements
                           and instruments to which SNB or the Bank is a party
                           or by which either of them is bound, and which
                           involve the payment by or to SNB or the Bank of more
                           than $50,000 in connection with the purchase of
                           property or goods or the performance of services and
                           which are not in the ordinary course of their
                           respective businesses. True, complete and correct
                           copies of all such contracts, agreements and
                           instruments have been delivered to Park. Neither SNB
                           nor the Bank, nor any other party to such contract,
                           is in default under any such contract, agreement,
                           commitment, arrangement or other instrument to which
                           it is a party, by which its

                                      -23-
   31

                           respective assets, business or operations may be
                           bound or affected in any way, or under which it or
                           its respective assets, business or operations receive
                           benefits, and there has not occurred any event that,
                           with the lapse of time or the giving of notice or
                           both, would constitute such a default.

                  (y)      Environmental Matters. Except as otherwise disclosed
                           in Section 3.01(y) of the SNB Disclosure Schedule:
                           (i) SNB and the Bank are and have been at all times
                           in compliance in all material respects with all
                           applicable Environmental Laws (as that term is
                           defined in this Section 3.01(y)), and, to the
                           knowledge of SNB, SNB and the Bank have not engaged
                           in any activity in violation of any applicable
                           Environmental Law; (ii)(A) no investigations,
                           inquiries, orders, hearings, actions or other
                           proceedings by or before any court or Governmental
                           Authority are pending or, to the knowledge of SNB,
                           threatened in connection with any of SNB's and Bank's
                           activities and any SNB Real Properties or
                           improvements thereon, and (B) to the knowledge of
                           SNB, no investigations, inquiries, orders, hearings,
                           actions or other proceedings by or before any court
                           or Governmental Authority are pending or threatened
                           in connection with any real properties in respect of
                           which the Bank holds a mortgage or mortgages
                           (hereinafter referred to as the "Bank Real Estate
                           Collateral"); (iii) no claims at any time have been
                           made or threatened by any third party against SNB or
                           the Bank, or with respect to the SNB Real Properties
                           or improvements thereon, or, to the knowledge of SNB,
                           the Bank Real Estate Collateral, relating to damage,
                           contribution, cost recovery, compensation, loss or
                           injury resulting from any Hazardous Substance (as
                           that term is defined in this Section 3.01(y)) which
                           have not been resolved to the satisfaction of the
                           involved parties and which have had or are reasonably
                           expected to have a material adverse effect on SNB or
                           the Bank; (iv) no Hazardous Substances have been
                           integrated into the SNB Real Properties or
                           improvements thereon, or, to the knowledge of SNB,
                           the Bank Real Estate Collateral or any component
                           thereof in such manner or quantity as may reasonably
                           be expected to or in fact would pose a threat to
                           human health or the value of the real property and
                           improvements; (v) to SNB's knowledge, no portion of
                           the SNB Real Properties or improvements thereon, or
                           the Bank Real Estate Collateral is located within 500
                           feet of (A) a release of Hazardous Substance which
                           has been reported or is required to be reported under
                           any Environmental Law or (B) the location of any site
                           used, in the past or presently, for the disposal of
                           any Hazardous Substances; and (vi) neither SNB nor
                           the Bank has knowledge, based upon commercially
                           reasonable inquiry, that (A) any of the SNB Real
                           Properties or improvements thereon, or the Bank Real
                           Estate Collateral has been used for the storage or
                           disposal of Hazardous Substances or has been
                           contaminated by Hazardous Substances, (B) any of its
                           business operations have contaminated lands, waters
                           or other property of others with

                                      -24-
   32

                           Hazardous Substances, except routine,
                           office-generated solid waste, or (C) any of the SNB
                           Real Properties or improvements thereon, or the Bank
                           Real Estate Collateral have in the past or presently
                           contain underground storage tanks, friable asbestos
                           materials or PCB-containing equipment.

                           For purposes of this Agreement, (i) "Environmental
                           Law" means the Comprehensive Environmental Response,
                           Compensation and Liability Act ("CERCLA"), 42 U.S.C.
                           section 9601 ET SEQ., the Resource Conservation and
                           Recovery Act, 42 U.S.C. section 6901 ET SEQ., the
                           Hazardous Materials Transportation Act, 49 U.S.C.
                           section 1802 ET SEQ., the Toxic Substances Control
                           Act, 15 U.S.C. section 2601 ET SEQ., the Federal
                           Water Pollution Control Act, 33 U.S.C. section 1251
                           ET SEQ., the Clean Water Act, 33 U.S.C. section 1321
                           ET SEQ., the Clean Air Act, 42 U.S.C. section 7401
                           ET SEQ., regulations promulgated thereunder, and any
                           other federal, state, county, municipal, local or
                           other statute, law, ordinance or regulation which
                           may relate to or deal with human health or the
                           environment, as of the date of this Agreement, and
                           (ii) "Hazardous Substances" means, at any time: (a)
                           any "hazardous substance" as defined in section
                           101(14) of CERCLA or regulations promulgated
                           thereunder; (b) any "solid waste," "hazardous
                           waste," or "infectious waste," as such terms are
                           defined in any other Environmental Law as of the
                           date of this Agreement; and (c) friable asbestos,
                           urea-formaldehyde, polychlorinated biphenyls
                           ("PCBs"), nuclear fuel or material, chemical waste,
                           radioactive material, explosives, known carcinogens,
                           petroleum products and by-products, and other
                           dangerous, toxic or hazardous pollutants,
                           contaminants, chemical, materials or substances
                           listed or identified in, or regulated by, any
                           Environmental Law.

                  (z)      Pooling. Neither SNB nor the Bank has taken,
                           permitted or agreed to take any action that would
                           prevent Park from accounting for the business
                           combination to be effected by the Merger as a
                           "pooling of interests."

                  (aa)     Takeover Laws. SNB has taken all action required to
                           be taken by it in order to exempt this Agreement and
                           the transactions contemplated hereby from, and this
                           Agreement and the transactions contemplated hereby
                           are exempt from, the requirements of any
                           "moratorium", "control share", "fair price",
                           "affiliate transaction", "business combination" or
                           other anti-takeover laws or regulations of any state
                           (collectively, "Takeover Laws") applicable to it,
                           including, without limitation, those of the State of
                           Ohio.

                  (bb)     Risk Management Instruments. All material interest
                           rate swaps, caps, floors, option agreements, futures
                           and forward contracts and other similar risk
                           management arrangements, whether entered into for
                           SNB's own account, or for the account of one or more
                           of the Bank or its customers (all of which are listed
                           on the SNB Disclosure Schedule), or entered into (i)
                           in

                                      -25-
   33

                           accordance with prudent business practices and all
                           applicable laws, rules, regulations and regulatory
                           policies and (ii) with counter-parties believed to be
                           financially responsible at the time; and each of them
                           constitutes the valid and legally binding obligation
                           of SNB or the Bank, enforceable in accordance with
                           its terms, and is in full force and effect. Neither
                           SNB nor the Bank, nor to SNB's knowledge any other
                           party thereto, is in breach of any of its obligations
                           under any such agreement or arrangement.

                  (cc)     Books and Records. The books and records of SNB and
                           the Bank have been fully, properly and accurately
                           maintained and have been maintained in accordance
                           with sound business practices. Such books and records
                           fairly reflect the substance of events and
                           transactions included therein.

                  (dd)     Year 2000. Neither SNB nor the Bank has received, or
                           has reason to believe that it will receive, a written
                           rating of less than "satisfactory" on any OCC or
                           other Regulatory Authority Year 2000 Report of
                           Examination. SNB has disclosed to Park a complete and
                           accurate copy of its Year 2000 plan, including an
                           estimate of the anticipated associated costs, for
                           addressing the issues set forth in the statements of
                           the FFIEC dated May 5, 1997, entitled "Year 2000
                           Project Management Awareness," and December 17, 1997,
                           entitled "Safety and Soundness Guidelines Concerning
                           the Year 2000 Business Risk," as such issues affect
                           SNB and the Bank and such plan is in material
                           compliance with the schedules set forth in the FFIEC
                           statements.

                  (ee)     Repurchase Agreements. With respect to any agreement
                           pursuant to which SNB or the Bank has purchased
                           securities subject to an agreement to repurchase, SNB
                           or the Bank, as the case may be, has a valid,
                           perfected first lien or security interest in or
                           evidence of ownership in book entry form of the
                           government securities or other collateral securing
                           the repurchase agreement, and the value of such
                           collateral equals or exceeds the amount of the debt
                           secured thereby.

                  (ff)     Disclosure. No representation or warranty by SNB
                           contained in this Agreement and no statement
                           contained in any certificate or other document
                           (including the SNB Disclosure Schedule) furnished by
                           SNB to Park pursuant to this Agreement contains any
                           untrue statement of a material fact or omits to state
                           a material fact necessary to make the statements
                           contained herein and therein not misleading, in the
                           light of the circumstances under which they were
                           made.

                                      -26-
   34

                                  ARTICLE FOUR
                     REPRESENTATIONS AND WARRANTIES OF PARK

                  4.01. REPRESENTATIONS AND WARRANTIES OF PARK

                  Park hereby warrants and represents to SNB that:

                  (a)      Corporate Status. Park is an Ohio corporation and a
                           bank holding company registered under the BHC Act; is
                           duly organized, validly existing and in good standing
                           under the laws of the State of Ohio; and has the full
                           corporate power and authority to own its property, to
                           carry on its business as presently conducted and to
                           enter into and perform its obligations under this
                           Agreement and consummate the transactions
                           contemplated by this Agreement.

                  (b)      Corporate Proceedings. All corporate proceedings of
                           Park necessary to authorize the execution, delivery
                           and performance of this Agreement, and the
                           consummation of the transactions contemplated by this
                           Agreement, by Park have been duly and validly taken.
                           This Agreement has been validly executed and
                           delivered by duly authorized officers of Park.

                  (c)      Capitalization of Park.

                           (i)      As of the date of this Agreement, the
                                    authorized capital stock of Park consists
                                    only of 20,000,000 common shares, without
                                    par value, of which 9,739,570 Park Shares
                                    are issued and outstanding and 291,565 Park
                                    Shares are held in treasury by Park. The
                                    outstanding Park Shares have been duly
                                    authorized and are validly issued, fully
                                    paid and non-assessable, and were not issued
                                    in violation of the preemptive rights of any
                                    person. As of the date of this Agreement,
                                    except pursuant to this Agreement and as
                                    disclosed in Section 4.01(c) of the Park
                                    Disclosure Schedule, Park has no commitment
                                    or obligation to issue, deliver or sell any
                                    Park Shares.

                           (ii)     The Park Shares to be issued in exchange for
                                    SNB Shares in the Merger, when issued in
                                    accordance with the terms of this Agreement,
                                    will be duly authorized, validly issued,
                                    fully paid and non-assessable and subject to
                                    no preemptive rights.

                  (d)      Authorized and Effective Agreement. This Agreement
                           constitutes the legal, valid and binding obligation
                           of Park, enforceable against Park in accordance with
                           its terms, except as the same may be limited by
                           bankruptcy, insolvency, reorganization, moratorium,
                           fraudulent conveyance and other similar laws relating
                           to or affecting the enforcement

                                      -27-
   35

                           of creditors' right generally, by general equitable
                           principles (regardless of whether enforceability is
                           considered in a proceeding in equity or at law) and
                           by an implied covenant of good faith and fair
                           dealing. Park has the absolute and unrestricted
                           right, power, authority and capacity to execute and
                           deliver this Agreement and, subject to the
                           satisfaction of the requirements referred to in
                           Section 4.01(k) and the expiration of applicable
                           regulatory waiting periods, and required filings
                           under federal and state securities laws, to perform
                           its obligations under this Agreement.

                  (e)      No Conflict. Subject to the satisfaction of the
                           requirements referred to in Section 4.01(k) and
                           expiration of applicable regulatory waiting periods,
                           and required filings under federal and state
                           securities laws, the execution, delivery and
                           performance of this Agreement, and the consummation
                           of the transactions contemplated by this Agreement,
                           by Park do not and will not (i) conflict with, or
                           result in a violation of, or result in the breach of
                           or a default (or which with notice or lapse of time
                           would result in a default) under any provision of:
                           (A) any federal, state or local law, regulation,
                           ordinance, order, rule or administrative ruling of
                           any Governmental Authority applicable to Park or any
                           of its properties; (B) the Articles of Incorporation
                           or Regulations of Park; (C) any material agreement,
                           indenture or instrument to which Park is a party or
                           by which it or its properties or assets may be bound;
                           or (D) any order, judgment, writ, injunction or
                           decree of any court, arbitration panel or any
                           Governmental Authority applicable to Park; (ii)
                           result in the creation or acceleration of any
                           security interest, mortgage, option, claim, lien,
                           charge or encumbrance upon any property of Park; or
                           (iii) violate the terms or conditions of, or result
                           in the cancellation, modification, revocation or
                           suspension of, any material license, approval,
                           certificate, permit or authorization held by Park.

                  (f)      Financial Statements of Park. Park has furnished to
                           SNB consolidated financial statements of Park
                           consisting of (i) consolidated balance sheets as of
                           December 31, 1998 and 1997 and the related
                           consolidated statements of income, changes in
                           shareholders' equity and cash flows for the three
                           years ended December 31, 1998, including accompanying
                           notes and the report thereon of Ernst & Young LLP and
                           (ii) unaudited consolidated balance sheets as of
                           September 30, 1999 (the "Park Balance Sheet Date")
                           and December 31, 1998, the related unaudited
                           consolidated statements of income for the three and
                           nine months ended September 30, 1999 and 1998, of
                           changes in shareholders' equity for the nine months
                           ended September 30, 1999 and 1998 and of cash flows
                           for the nine months ended September 30, 1999 and 1998
                           (collectively, all of such consolidated financial
                           statements are referred to as the "Park Financial
                           Statements"). The Park Financial Statements were
                           prepared in conformity with GAAP

                                      -28-
   36

                           applied on a consistent basis and present fairly, in
                           all material respects, the consolidated financial
                           condition of Park at the dates, and the consolidated
                           results of operations and cash flows for the periods,
                           stated therein; subject, in the case of the interim
                           financial statements, to normal year-end audit
                           adjustments which are not expected to be,
                           individually or in the aggregate, materially adverse
                           to Park and the absence of full footnotes.

                  (g)      Absence of Changes. Since the Park Balance Sheet
                           Date: (i) the businesses of Park and its subsidiaries
                           have been conducted only in the ordinary course
                           consistent with past practice; (ii) there has been no
                           material adverse change in the assets, liabilities,
                           business or operations of Park and its subsidiaries
                           taken as a whole; (iii) there has been no damage,
                           destruction, loss or event (whether or not insured
                           against) which in the aggregate has had or might
                           reasonably be expected to have a material adverse
                           effect on the business or operations of Park and its
                           subsidiaries taken as a whole; and (iv) Park has
                           announced its proposed acquisition of U. B.
                           Bancshares, Inc., an Ohio corporation, pursuant to a
                           merger.

                  (h)      Takeover Laws. Park has taken all action required to
                           be taken by it in order to exempt this Agreement and
                           the transactions contemplated hereby from, and this
                           Agreement and the transactions contemplated hereby
                           are exempt from, the requirements of any Takeover
                           Laws applicable to Park.

                  (i)      Reports and Records. The Park Shares are registered
                           with the SEC pursuant to Section 12(b) of the
                           Securities Exchange Act of 1934, as amended (the
                           "Exchange Act"). Park has filed all reports and proxy
                           materials required to be filed by it with the SEC
                           pursuant to the Exchange Act, except for any reports
                           or proxy materials the failure to file which would
                           not have a material adverse effect upon Park and its
                           subsidiaries taken as a whole. All such filings, at
                           the time of filing, complied in all material respects
                           as to form and included all exhibits required to be
                           filed under the applicable rules of the SEC. None of
                           such documents, when filed, contained any untrue
                           statement of a material fact or omitted to state a
                           material fact required to be stated therein or
                           necessary in order to make the statements therein, in
                           light of the circumstances under which they were
                           made, not misleading.

                  (j)      Brokers, Finders and Others. There are no fees or
                           commissions of any sort whatsoever claimed by, or
                           payable by Park to, any broker, finder, intermediary
                           or any other similar person in connection with
                           effecting this Agreement or the transactions
                           contemplated hereby.

                  (k)      Governmental Proceedings. No consent, approval,
                           authorization of, or registration, declaration or
                           filing with, any court, Governmental Authority

                                      -29-
   37

                           or any other third party is required to be made or
                           obtained by Park in connection with the execution,
                           delivery or performance by Park of this Agreement or
                           the consummation by Park of the transactions
                           contemplated hereby, except for (A) filings of
                           applications or notices, as applicable, with and the
                           approval of certain federal banking authorities, (B)
                           filings with the SEC and state securities
                           authorities, (C) the filing of the appropriate
                           certificate of merger with the Secretary of State
                           pursuant to the OGCL and (D) receipt of the approvals
                           set forth in Section 7.08. As of the date hereof,
                           Park is not aware of any reason why the approvals set
                           forth in Section 7.08 will not be received without
                           the imposition of a condition, restriction or
                           requirement of the type described in Section 7.08.

                  (l)      Pooling. Neither Park nor any of its Subsidiaries has
                           taken or permitted any action which would prevent the
                           Merger from being accounted for as a pooling of
                           interests.

                  (m)      Park Information. None of the information relating to
                           Park to be contained in the Registration Statement
                           will, at the time the Registration Statement is filed
                           with the SEC and at the time it becomes effective
                           under the Securities Act, contain any untrue
                           statement of a material fact or omit to state a
                           material fact required to be stated therein or
                           necessary in order to make the statements therein, in
                           light of the circumstances under which they were
                           made, not misleading, provided that information as of
                           a later date shall be deemed to modify information as
                           of an earlier date.

                  (n)      Year 2000. Neither Park nor any of its Subsidiaries
                           has received, or has reason to believe that it will
                           receive, a written rating of less than "satisfactory"
                           on any Year 2000 Report of Examination of any
                           Regulatory Authority. Park has disclosed to SNB a
                           complete and accurate copy of its Year 2000 plan,
                           including an estimate of the anticipated associated
                           costs, for addressing the issues set forth in the
                           statements of the FFIEC dated May 5, 1997, entitled
                           "Year 2000 Project Management Awareness," and
                           December 17, 1997, entitled "Safety and Soundness
                           Guidelines Concerning the Year 2000 Business Risk,"
                           as such issues affect Park and its Subsidiaries, and
                           such plan is in material compliance with the schedule
                           set forth in the FFIEC statements.

                  (o)      Deposit Insurance. The deposits of Park's bank
                           subsidiaries are insured by the FDIC in accordance
                           with the Federal Deposit Insurance Act and said banks
                           have paid all assessments and filed all reports
                           required by the Federal Deposit Insurance Act.

                  (p)      Disclosure. No representation or warranty by Park
                           contained in this Agreement, and no statement
                           contained in any certificate or other

                                      -30-
   38

                           document (including the Park Disclosure Schedule)
                           furnished by Park to SNB pursuant to this Agreement
                           contains any untrue statement of a material fact or
                           omits to state a material fact necessary to make the
                           statements contained herein and therein not
                           misleading, in the light of the circumstances under
                           which they were made.

                                  ARTICLE FIVE
                            FURTHER COVENANTS OF SNB

                  5.01.    OPERATION OF BUSINESS

                  SNB covenants with Park that throughout the period from the
date of this Agreement to and including the Closing:

                  (a)      Conduct of Business. SNB's business and the business
                           of the Bank will be conducted only in the ordinary
                           and usual course consistent with past practice.
                           Without the written consent of Park, SNB shall not
                           (i) take any action which would be inconsistent with
                           any representation or warranty of SNB set forth
                           herein or which would cause a breach of any such
                           representation or warranty if made at or immediately
                           following such action; or (ii) engage in any lending
                           activities other than in the ordinary course of
                           business consistent with past practice. SNB shall
                           send to Park via facsimile transmission a copy of all
                           loan presentations made to the Board of Directors of
                           SNB at the same time as such presentations are
                           transmitted to such Board and all other proposals for
                           loans in excess of $500,000. SNB shall consult with
                           Park prior to (x) hiring any full-time officer, other
                           than replacement employees for positions then
                           existing and (y) purchasing any investment
                           securities.

                  (b)      Changes in Business and Capital Structure. Except
                           with the consent of Park or as provided for by this
                           Agreement, SNB will not, and will cause the Bank not
                           to:

                           (i)      sell, transfer, mortgage, pledge or subject
                                    to any lien or otherwise encumber any of the
                                    assets of SNB or the Bank, tangible or
                                    intangible, except in the ordinary course of
                                    business for full and fair consideration
                                    actually received;

                           (ii)     make any capital expenditure or capital
                                    additions or betterments (other than
                                    expenditures of up to $157,000 in respect of
                                    computer equipment which was previously
                                    approved by the Bank as a planned capital
                                    expenditure for 2000) which, in the
                                    aggregate, exceed $40,000;

                                      -31-
   39

                           (iii)    become bound by, enter into, or perform any
                                    material contract, commitment or transaction
                                    which is other than in the ordinary course
                                    of its business or which would cause or
                                    result in its being unable to perform its
                                    obligations under this Agreement;

                           (iv)     declare, pay or set aside for payment any
                                    dividends or make any distributions on its
                                    capital shares issued and outstanding other
                                    than (A) semi-annual cash dividends on SNB
                                    Shares in an amount not to exceed $4.00 per
                                    share, with record and payment dates as
                                    indicated in Section 7.09 of this Agreement,
                                    and (B) those payable by the Bank to SNB, in
                                    each case which are consistent with the past
                                    practices of SNB and the Bank; except that
                                    SNB may declare in 2000 and pay in 2000, in
                                    lieu of semi-annual dividends, quarterly
                                    dividends provided the amount per share per
                                    quarter is less than $3.49;

                           (v)      purchase, redeem, retire or otherwise
                                    acquire any of its capital shares;

                           (vi)     issue or grant any option or right to
                                    acquire any of its capital shares or effect,
                                    directly or indirectly, any stock split,
                                    recapitalization, combination, exchange of
                                    shares, readjustment or other
                                    reclassification;

                           (vii)    amend its articles of incorporation,
                                    constitution, regulations or by-laws;

                           (viii)   merge or consolidate with any other person
                                    or otherwise reorganize except for the
                                    Merger;

                           (ix)     acquire (other than by way of foreclosures
                                    or acquisitions of control in a bona fide
                                    fiduciary capacity or in satisfaction of
                                    debts previously contracted in good faith,
                                    in each case in the ordinary and usual
                                    course of business consistent with past
                                    practice) all or any portion of, the assets,
                                    business, deposits or properties of any
                                    other entity;

                           (x)      enter into, establish, adopt or amend any
                                    pension, retirement, stock option, stock
                                    purchase, savings, profit sharing, deferred
                                    compensation, consulting, bonus, group
                                    insurance or other employee benefit,
                                    incentive or welfare contract, plan or
                                    arrangement, or any trust agreement (or
                                    similar arrangement) related thereto, in
                                    respect of any Director, Officer or Employee
                                    of SNB or the Bank, or take any action to
                                    accelerate the vesting or exercisability of
                                    stock options, restricted stock or other
                                    compensation or benefits payable there-

                                      -32-

   40

                                    under; provided, however, that SNB may (A)
                                    take such actions in order to satisfy either
                                    applicable law or contractual obligations
                                    existing as of the date hereof and disclosed
                                    in the SNB Disclosure Schedule or regular
                                    annual renewals of insurance contracts; and
                                    (B) terminate its Defined Contribution
                                    Retirement Plan at any time before the
                                    Effective Time, with benefit distributions
                                    deferred until the IRS issues a favorable
                                    determination with respect to the
                                    terminating plan's tax-qualified status upon
                                    termination and with SNB and Park to
                                    cooperate in good faith to apply for such
                                    approval and to agree upon associated plan
                                    termination amendments that shall, among
                                    other things, provide for the application of
                                    all assets of a terminating plan for its
                                    participants, and allow plan participants
                                    not only to receive lump-sum distributions
                                    of their benefits but also to transfer those
                                    benefits to the Park National Corporation
                                    Employee's Voluntary Salary Deferral Plan
                                    and Trust maintained for employees of Park
                                    and its Subsidiaries;

                           (xi)     pay any general wage or salary increase,
                                    other than normal pay increases consistent
                                    with past practices, or enter into or amend
                                    or renew any employment, consulting,
                                    severance or similar agreements or
                                    arrangements with any Officer, Director or
                                    Employee, except, in each case, for changes
                                    which are required by applicable law or to
                                    satisfy contractual obligations existing as
                                    of the date hereof and disclosed in the SNB
                                    Disclosure Schedule;

                           (xii)    enter into or terminate any contract
                                    requiring the payment or receipt of $15,000
                                    or more in any 12-month period or amend or
                                    modify in any material respect any of its
                                    existing material contracts;

                           (xiii)   incur any indebtedness for money borrowed or
                                    incur any material obligation or liability
                                    other than in the ordinary course of
                                    business;

                           (xiv)    take any action that would, or is reasonably
                                    likely to, prevent or impede the Merger from
                                    qualifying (A) for "pooling-of-interest"
                                    accounting treatment or (B) as a
                                    reorganization within the meaning of Section
                                    368(a) of the Code;

                           (xv)     implement or adopt any change in its
                                    accounting principles, practices or methods,
                                    other than as may be required by GAAP;

                           (xvi)    waive or cancel any right of material value
                                    or material debts, except in the ordinary
                                    course of business consistent with past
                                    practices;

                                      -33-
   41

                           (xvii)   take any action that would result in (A) any
                                    of its representations or warranties
                                    contained in this Agreement being or
                                    becoming untrue in any material respect at
                                    any time at or prior to the Effective Time,
                                    (B) any of the conditions to the Merger set
                                    forth in Article Eight not being satisfied
                                    or (C) a violation of any provision of this
                                    Agreement except, in each case, as may be
                                    required by applicable law or regulation;

                           (xviii)  cause any material adverse change in the
                                    amount or general composition of deposit
                                    liabilities;

                           (xix)    make any material investment (except in the
                                    ordinary course of business); or

                           (xx)     enter into any agreement to do any of the
                                    foregoing.

                  (c)      Maintenance of Property. SNB and the Bank will use
                           their commercially reasonable efforts to maintain and
                           keep their respective property and facilities in
                           their present condition and working order, ordinary
                           wear and tear excepted.

                  (d)      Performance of Obligations. SNB and the Bank will
                           perform all of their obligations under all agreements
                           relating to or affecting their properties, rights and
                           business, except where nonperformance would not have
                           a material adverse effect on SNB or the Bank.

                  (e)      Maintenance of Business Organization. SNB will, and
                           will cause the Bank to, use their commercially
                           reasonable efforts to maintain and preserve their
                           respective business organizations intact; to retain
                           present key employees; and to maintain the respective
                           relationships of customers, suppliers and others
                           having business relationships with them. SNB will
                           not, and will cause the Bank not to, take any action
                           or omit to take any action which would terminate or
                           enable any Employee of SNB or the Bank to terminate
                           his employment or employment agreement without cause
                           and continue thereafter to receive compensation.

                  (f)      Insurance. SNB and the Bank will maintain insurance
                           coverage with reputable insurers, which in respect of
                           amounts, premiums, types and risks insured, were
                           maintained by them at the Balance Sheet Date, and
                           upon the renewal or termination of such insurance,
                           SNB and the Bank will use commercially reasonable
                           best efforts to renew or replace such insurance
                           coverage with reputable insurers, which in respect of
                           amounts, premiums, types and risks insured or
                           maintained by them at the Balance Sheet Date.

                                      -34-

   42

                  (g)      Access to Information. SNB will, and will cause the
                           Bank to, take all action necessary to (i) afford the
                           officers and designated representatives of Park full
                           access during normal business hours upon reasonable
                           notice to all of SNB's and the Bank's properties
                           (including for purposes of inspection and
                           investigation for soil and groundwater tests), books,
                           records, tax returns and reports, financial
                           statements, contracts and commitments, and any work
                           papers relating to any of the foregoing; (ii) furnish
                           to Park all such documents, copies of documents, and
                           information (A) concerning compliance and/or
                           noncompliance with Environmental Laws and with
                           respect to the past, present or suspected future
                           presence of Hazardous Substances on the SNB Real
                           Properties, and Bank Real Estate Collateral,
                           including but not limited to environmental audit and
                           Phase I reports, and (B) concerning SNB's and the
                           Bank's affairs as Park may reasonably request; (iii)
                           afford full access to Park to SNB's and the Bank's
                           Officers, Directors, Employees and agents in order
                           that Park may have full opportunity to make such
                           investigation as it shall desire to make of the
                           business and affairs of SNB and the Bank; and (iv)
                           authorize Park's representatives to inquire of
                           government agencies, and inspect the files of those
                           agencies, with respect to the environment conditions
                           on and about the SNB Real Properties and Bank Real
                           Estate Collateral. During the period from the date of
                           this Agreement to the Effective Time, SNB shall
                           promptly furnish Park with copies of all monthly and
                           other interim financial statements produced in the
                           ordinary course of business as the same shall become
                           available.

                  (h)      Payment of Taxes. SNB shall, and shall cause the Bank
                           to, timely file all Tax Returns, required to be filed
                           on or before the Closing Date, and pay any Tax shown
                           on such Tax Returns to be due.

                  (i)      Risk Management. Except as required by applicable law
                           or regulation, neither SNB nor Bank shall (i)
                           implement or adopt any material change in its
                           interest rate risk management and other risk
                           management policies, procedures or practices; (ii)
                           fail to follow its existing policies or practices
                           with respect to managing its exposure to interest
                           rate and other risks; or (iii) fail to use
                           commercially reasonable means to avoid any material
                           increase in its aggregate exposure to interest rate
                           risk.

                  5.02.    NOTIFICATION

                  Between the date of this Agreement and the Closing Date, SNB
will promptly notify Park in writing if SNB becomes aware of any fact or
condition that (a) causes or constitutes a breach of any of its representations
and warranties or (b) would (except as expressly contemplated by this Agreement)
cause or constitute a breach of any such representation or warranty had such
representation or warranty been made as of the time of occurrence or

                                      -35-

   43

discovery of such fact or condition. Should any such fact or condition require
any change in the SNB Disclosure Schedule, SNB will promptly deliver to Park a
supplement to the SNB Disclosure Schedule specifying such change ("Updated SNB
Disclosure Schedule"). During the same period, SNB will promptly notify Park of
(i) the occurrence of any breach of any of its covenants contained in this
Agreement, (ii) the occurrence of any event that may make the satisfaction of
the conditions in this Agreement impossible or unlikely or (iii) the occurrence
of any event that is reasonably likely, individually or taken with all other
facts, events or circumstances known to it, to result in a material adverse
effect with respect to it. In addition, if at any time prior to the Effective
Time, any event or circumstances relating to SNB or any of its Officers or
Directors should be discovered which should be set forth in an amendment to the
Registration Statement or a supplement to the SNB Proxy Statement, SNB shall
promptly inform Park.

                  5.03.    SHAREHOLDER APPROVAL

                  SNB covenants that:

                  (a)      The Board of Directors of SNB will recommend the
                           adoption of this Agreement and the approval of the
                           transactions contemplated hereby to the shareholders
                           of SNB, subject to that Board's fiduciary obligations
                           under Ohio law, as determined in good faith after
                           consultation with and based upon advise of
                           independent legal counsel.

                  (b)      SNB will call a meeting of its shareholders (the "SNB
                           Meeting") to be held as soon as reasonably
                           practicable after the Registration Statement is
                           declared effective by the SEC, for the purpose of
                           adopting this Agreement and approving the
                           transactions contemplated hereby and will, subject to
                           the provisions of Sections 5.03(a) and 5.04(a), use
                           its best efforts to effect such adoption and
                           approval. SNB will prepare appropriate proxy
                           solicitation materials in respect of the SNB Meeting,
                           which materials will include a proxy statement of SNB
                           (the "SNB Proxy Statement") and which will be a part
                           of the Registration Statement to be submitted by Park
                           to the SEC pursuant to Section 7.07 of this
                           Agreement.


                  5.04.    ACQUISITION PROPOSALS

                  From and after the date hereof, SNB will not, directly or
indirectly, through any of its Officers, Directors, Employees, agents or
advisors, (i) solicit or initiate or knowingly encourage, including by means of
furnishing information, any proposals, offers or inquiries from any person
relating to any acquisition or purchase of 20% or more of the outstanding shares
of any class of voting securities of, or 20% or more of the assets or deposits
of, SNB or the Bank, or any merger, tender or exchange offer, consolidation or
business combination involving, SNB or the Bank (an "Acquisition Proposal") or
(ii) unless the directors of SNB determine in good faith

                                      -36-

   44

that such action is required for them to fulfill their fiduciary duties and
obligations to the SNB shareholders under Ohio law as advised by counsel to SNB
and SNB gives prior notice to Park of such action (in which event SNB may
furnish information), engage in negotiations with or disclose any nonpublic
information relating to SNB or the Bank or afford access to the SNB Real
Properties, or the books or records of SNB or the Bank to any person that may be
considering or has made an Acquisition Proposal. SNB shall promptly (within 24
hours) notify Park, orally and in writing, if any such proposal, offer, inquiry
or contact is made and shall, in any such notice, indicate the identity and
terms and conditions of any proposal or offer, or any such inquiry or contact.
SNB shall immediately cease and cause to be terminated any activities,
discussions or negotiations conducted prior to the date of this Agreement with
any parties other than Park with respect to any Acquisition Proposal and shall
use its reasonable best efforts to enforce any confidentiality or similar
agreement relating to an Acquisition Proposal.

                  5.05.    DELIVERY OF INFORMATION

                  SNB will promptly furnish to Park all information requested by
Park regarding SNB's assets, properties, business, affairs, operations,
condition (financial or otherwise), prospects and corporate organization as
shall be required by the rules and regulations under the Securities Act or by
the SEC for inclusion in the Registration Statement described in Section 7.07
and shall otherwise reasonably assist Park in the preparation and filing of such
Registration Statement.

                  5.06.    AFFILIATES COMPLIANCE WITH THE SECURITIES ACT

                  (a)      In the SNB Disclosure Schedule and no later than the
                           15th day prior to the mailing of the SNB Proxy
                           Statement, SNB shall deliver to Park a schedule of
                           all persons whom SNB reasonably believes are, or are
                           likely to be, as of the date of the SNB Meeting,
                           deemed to be "affiliates" of SNB as that term is used
                           in Rule 145 under the Securities Act and/or
                           Accounting Series Releases 130 and 135, as amended,
                           of the SEC (the "Rule 145 Affiliates"). Thereafter
                           and until the Effective Time, SNB shall identify to
                           Park each additional person whom it reasonably
                           believes to have thereafter become a Rule 145
                           Affiliate.

                  (b)      SNB shall use its diligent efforts to cause each
                           person who is identified as a Rule 145 Affiliate
                           pursuant to clause (a) above (who has not executed
                           and delivered the same concurrently with the
                           execution of this Agreement) to execute and deliver
                           to Park on or before the date of mailing of the SNB
                           Proxy Statement, a written agreement, substantially
                           in the form of Exhibit A attached hereto. Because the
                           Merger is intended to qualify for
                           "pooling-of-interests" accounting treatment, the Park
                           Shares received by such Rule 145 Affiliates in the
                           Merger shall not be transferable from 30 days before
                           the Effective Time until such time as financial
                           results covering at least 30 days of post-Merger
                           operations have been published within the meaning of

                                      -37-
   45

                           Section 201.01 of the SEC's Codification of Financial
                           Reporting Policies, regardless of whether each such
                           Rule 145 Affiliate has provided the written agreement
                           referred to in this Section, and the certificates
                           representing such Park Shares will bear an
                           appropriate restrictive legend.

                  5.07.    TAKEOVER LAWS

                  SNB shall take all necessary steps to (a) exempt (or cause the
continued exemption of) this Agreement and the Merger from the requirements of
any Takeover Law and from any provisions under its articles of incorporation and
regulations, as applicable, by action of the Board of Directors of SNB or
otherwise, and (b) assist in any challenge by Park to the validity, or
applicability to the Merger, of any Takeover Law.

                  5.08     SNB STOCK OPTIONS

                  The sole holder of outstanding SNB Stock Options shall
exercise all SNB Stock Options held by such holder no later than the date on
which the shareholders of SNB adopt this Agreement.

                                   ARTICLE SIX
                            FURTHER COVENANTS OF PARK

                  6.01.    CURRENT INFORMATION

                  Park shall furnish to SNB promptly after such documents are
available: (a) all reports, proxy statements or other communications by Park to
its shareholders generally; and (b) all press releases relating to any
transactions.

                  6.02.    OPPORTUNITY OF EMPLOYMENT; EMPLOYEE BENEFITS

                  The existing employees of SNB and the Bank shall have the
opportunity to continue as employees of Park or one of its Subsidiaries, at the
Effective Time; subject, however, to the right of Park and its Subsidiaries to
terminate any such employees for "cause." It is understood and agreed that
nothing in this Section 6.02 or elsewhere in this Agreement shall be deemed to
be a contract of employment or be construed to give said employees any rights
other than as employees at will under applicable law and said employees shall
not be deemed to be third-party beneficiaries of this provision. From and after
the Effective Time, SNB and Bank employees shall continue to participate in the
SNB Compensation and Benefit Plans (other than the SNB Stock Option Plan) in
effect at the Effective Time unless and until Park, in its sole discretion,
shall determine that SNB and Bank employees shall, subject to applicable
eligibility requirements, participate in employee benefit plans of Park and that
all or some of the SNB Compensation and Benefit Plans shall be terminated or
merged into certain employee benefit plans of Park. Notwithstanding the
foregoing, each SNB employee and each Bank employee shall be credited with years
of service with SNB, the Bank and, to the extent credit would have been given by
SNB or the Bank for years of service with a predecessor (including any business

                                      -38-
   46

organization acquired by the Bank), years of service with a predecessor of the
Bank, for purposes of eligibility and vesting (but not for benefit accrual
purposes) in the employee benefit plans of Park, and shall not be subject to any
exclusion or penalty for pre-existing conditions that were covered under SNB's
Compensation and Benefit Plans immediately prior to the Effective Time, or to
any waiting period relating to such coverage. If, after the Effective Time, Park
adopts a new plan or program for its employees or executives, then to the extent
its employees or executives receive past service credits for any reason, Park
shall credit similarly-situated employees and executives of SNB and the Bank
with equivalent credit for service with SNB, the Bank or the Bank's
predecessors, to the extent that years of service credit would have been given
by SNB or the Bank for years of service with a predecessor of the Bank. The
foregoing covenants shall survive the Merger, and Park shall before the
Effective Time adopt resolutions that amend its tax-qualified retirement plans
to provide for the SNB and Bank service credits referenced herein.

                  6.03.    AMEX LISTING

                  Park shall file a listing application with AMEX for the Park
Shares to be issued to the former holders of SNB Shares in the Merger at the
time prescribed by applicable rules and regulations of AMEX. In addition, Park
will use its best efforts to maintain its listing on AMEX.

                  6.04.    TAKEOVER LAWS

                  Park shall take all necessary steps to (a) exempt (or cause
the continued exemption of) this Agreement and the Merger from the requirements
of any Takeover Law and from any provisions under its Articles of Incorporation
and Regulations, as applicable, by action of the Board of Directors of Park or
otherwise, and (b) assist in any challenge by SNB to the validity, or
applicability to the Merger, of any Takeover Law.

                  6.05.    NOTIFICATION

                  Between the date of this Agreement and the Closing Date, Park
will promptly notify SNB in writing if Park becomes aware of any fact or
condition that (a) causes or constitutes a breach of any of its representations
and warranties, or (b) would (except as expressly contemplated by this
Agreement) cause or constitute a breach of any such representation or warranty
had such representation or warranty been made as of the time of occurrence or
discovery of such fact or condition. Should any such fact or condition require
any change in the Park Disclosure Schedule, Park will promptly deliver to SNB a
supplement to the Park Disclosure Schedule specifying such change ("Updated Park
Disclosure Schedule"). During the same period, Park will promptly notify SNB of
(i) the occurrence of any breach of any of its covenants contained in this
Agreement or (ii) the occurrence of any event that may make the satisfaction of
the conditions in this Agreement impossible or unlikely.

                                      -39-


   47

                  6.06     OFFICERS' AND DIRECTORS' INDEMNIFICATION

                  (a)      Following the Effective Time, Park shall indemnify,
                           defend and hold harmless the present Directors,
                           Officers and Employees of SNB and the Bank (each, an
                           "Indemnified Party") against costs or expenses
                           (including reasonable attorneys' fees), judgments,
                           fines, losses, claims, damages or liabilities
                           (collectively, "Costs") incurred in connection with
                           any claim, action, suit, proceeding or investigation,
                           whether civil, criminal, administrative or
                           investigative, arising out of actions or omissions
                           occurring on or prior to the Effective Time
                           (including, without limitation, the transactions
                           contemplated by this Agreement) to the fullest extent
                           that SNB or the Bank is required to indemnify (and
                           advance expenses to) an Indemnified Party under the
                           laws of the State of Ohio and the articles of
                           incorporation and regulations of SNB and the articles
                           of association and by-laws of the Bank, to the extent
                           applicable to the particular Indemnified Party, as in
                           effect on the date hereof; provided that any
                           determination required to be made with respect to
                           whether an Indemnified Party's conduct complies with
                           the standards set forth under Ohio law, the articles
                           of incorporation and regulations of SNB or the
                           articles of association and by-laws of the Bank shall
                           be made by the court in which the claim, action, suit
                           or proceeding was brought or by independent counsel
                           (which shall not be counsel that provides material
                           services to Park) selected by Park and reasonably
                           acceptable to such Indemnified Party.

                  (b)      For a period of six years from the Effective Time,
                           Park shall use its reasonable best efforts to provide
                           that portion of directors' and officers' liability
                           insurance that serves to reimburse the present and
                           former Officers and Directors of SNB or the Bank
                           (determined as of the Effective Time) (as opposed to
                           SNB) with respect to claims against such Directors
                           and Officers arising from facts or events which
                           occurred before the Effective Time, on terms no less
                           favorable than those in effect on the date hereof;
                           provided, however, that Park may substitute therefor
                           policies providing at least comparable coverage
                           containing terms and conditions no less favorable
                           than those in effect on the date hereof; provided,
                           however that in no event shall Park be required to
                           expend more than 200 percent of the current amount
                           expended by SNB (the "Insurance Amount") to maintain
                           or procure such directors' and officers' liability
                           insurance coverage; provided, further that if Park is
                           unable to maintain or obtain the insurance called for
                           by this Section 6.06(b), Park shall use its
                           reasonable best efforts to obtain as much comparable
                           insurance as is available for the Insurance Amount;
                           and provided, further, that Officers and Directors of
                           SNB or the Bank may be required to make application
                           and provide customary representations and warranties
                           to Park's insurance carrier for the purpose of
                           obtaining such insurance.

                                      -40-
   48

                  (c)      Any Indemnified Party wishing to claim
                           indemnification under Section 6.06(a), upon learning
                           of any claim, action, suit, proceeding or
                           investigation described above, shall promptly notify
                           Park thereof; provided that the failure so to notify
                           shall not affect the obligations of Park under
                           Section 6.06(a) unless and to the extent that Park is
                           actually prejudiced as a result of such failure.

                  (d)      If Park or any of its successors or assigns shall
                           consolidate with or merge into any other entity and
                           shall not be the continuing or surviving entity of
                           such consolidation or merger or shall transfer all or
                           substantially all of its assets to any entity, then
                           and in each case, proper provision shall be made so
                           that the successors and assigns of Park shall assume
                           the obligations set forth in this Section 6.06.


                                  ARTICLE SEVEN
                       FURTHER OBLIGATIONS OF THE PARTIES

                  7.01.    NECESSARY FURTHER ACTION

                  Each of SNB and Park agrees to use its reasonable best efforts
in good faith to take, or cause to be taken, all necessary actions and execute
all additional documents, agreements and instruments required to consummate the
transactions contemplated in this Agreement.

                  7.02.    COOPERATIVE ACTION

                  Subject to the terms and conditions of this Agreement, each of
SNB and Park agrees to use its reasonable best efforts in good faith to take, or
cause to be taken, all further actions and execute all additional documents,
agreements and instruments which may be reasonably required, in the opinion of
counsel for SNB and counsel for Park, to satisfy all legal requirements of the
State of Ohio and the United States, so that this Agreement and the transactions
contemplated hereby will become effective as promptly as practicable.

                  7.03.    SATISFACTION OF CONDITIONS

                  Park and SNB shall each use its reasonable best efforts to
satisfy all of the conditions to this Agreement and to cause the consummation of
the transactions described in this Agreement, including making all governmental
applications, notices and filings and taking all steps to secure promptly all
government consents, rulings and approvals which are necessary for the
performance by each party of each of its obligations under this Agreement and
the transactions contemplated hereby.

                                      -41-

   49

                  7.04.    ACCOUNTING AND TAX TREATMENT

                  Each of SNB and Park agrees not to take any actions subsequent
to the date of this Agreement that would adversely affect the ability of the
Surviving Corporation to treat the Merger as a "pooling-of-interests" in
accordance with GAAP or SNB or the shareholders of SNB to characterize of the
Merger as a tax-free reorganization under Section 368(a) of the Code. Each of
SNB and Park agrees to take such action as may be reasonably required, if such
action may be reasonably taken to reverse the impact of any past actions which
would adversely impact the ability of the Surviving Corporation to treat the
Merger as a "pooling-of-interests" for accounting purposes or for the Merger to
be characterized as a tax-free reorganization under Section 368(a) of the Code.

                  7.05.    CONFIDENTIALITY

                  Each of SNB and Park agrees that it will not, and will cause
its representatives not to, use any confidential information obtained pursuant
to this Agreement (as well as any other information obtained prior to the date
hereof in connection with the entering into of this Agreement) for any purpose
unrelated to the consummation of the transactions contemplated by this
Agreement. Subject to the requirements of law, each party will keep
confidential, and will cause its representatives to keep confidential, all
information and documents obtained pursuant to this Agreement (as well as any
other information obtained prior to the date hereof in connection with the
entering into of this Agreement) unless such information (a) was already known
to such party, (b) becomes available to such party from other sources not known
by such party to be bound by a confidentiality obligation, (c) is disclosed with
the prior written approval of the party to which such information pertains or
(d) is or becomes readily ascertainable from published information or trade
sources. In the event that this Agreement is terminated or the transactions
contemplated by this Agreement shall otherwise fail to be consummated, each
party shall promptly cause all copies of documents or extracts thereof
containing information and data as to another party hereto, to be returned to
the party which furnished the same.

                  7.06.    PRESS RELEASES

                  Each of Park and SNB shall not make any press release or other
public announcement concerning the transactions contemplated by this Agreement
without the consent of the other party hereto as to the form and contents of
such press release or announcement, except to the extent that such press release
or announcement may be required by law or AMEX rules to be made before such
consent can be obtained.

                  7.07.    REGISTRATION STATEMENT

                  (a)      Park agrees to prepare pursuant to all applicable
                           laws, rules and regulations a registration statement
                           on Form S-4 (the "Registration Statement") to be
                           filed by Park with the SEC in connection with the
                           issuance of Park Shares in the Merger (including the
                           SNB Proxy Statement constituting a part

                                      -42-
   50

                           thereof and all related documents). SNB agrees to
                           cooperate, and to cause the Bank to cooperate, with
                           Park, its counsel and its accountants, in the
                           preparation of the Registration Statement and the SNB
                           Proxy Statement; and provided that SNB and the Bank
                           have cooperated as required above, Park agrees to
                           file the Registration Statement, which will include
                           the SNB Proxy Statement and a prospectus in respect
                           of the Park Shares to be issued in the Merger
                           (together, the "Proxy/Prospectus") with the SEC as
                           promptly as reasonably practicable. Each of SNB and
                           Park agrees to use all reasonable efforts to cause
                           the Registration Statement including the
                           Proxy/Prospectus to be declared effective under the
                           Securities Act as promptly as reasonably practicable
                           after the filing thereof. Park also agrees to use all
                           reasonable efforts to obtain, prior to the effective
                           date of the Registration Statement, all necessary
                           state securities law or "Blue Sky" permits and
                           approvals required to carry out the transactions
                           contemplated by this Agreement. SNB agrees to furnish
                           to Park all information concerning SNB, the Bank and
                           the Officers, Directors and shareholders of SNB and
                           the Bank as may be reasonably requested in connection
                           with the foregoing.

                  (b)      Each of SNB and Park agrees, as to itself and its
                           Subsidiaries, that none of the information supplied
                           or to be supplied by it for inclusion or
                           incorporation by reference in (i) the Registration
                           Statement will, at the time the Registration
                           Statement and each amendment or supplement thereto,
                           if any, becomes effective under the Securities Act,
                           contain any untrue statement of a material fact or
                           omit to state any material fact required to be stated
                           therein or necessary to make the statements therein
                           in light of the circumstances under which they were
                           made, not misleading, and (ii) the Proxy
                           Statement/Prospectus and any amendment or supplement
                           thereto will, at the date of mailing to the SNB
                           shareholders and at the time of the SNB Meeting, as
                           the case may be, contain any untrue statement of a
                           material fact or omit to state any material fact
                           required to be stated therein or necessary to make
                           the statements therein in light of the circumstances
                           under where they were made not misleading. Each of
                           SNB and Park further agrees, if it shall become aware
                           prior to the Effective Time of any information
                           furnished by it that would cause any of the
                           statements in the Registration Statement and the
                           Proxy Statement/Prospectus to be false or misleading
                           with respect to any material fact, or to omit to
                           state any material fact necessary to make the
                           statements therein not false or misleading, to
                           promptly inform the other party thereof and to take
                           the necessary steps to correct the Registration
                           Statement and the Proxy Statement/Prospectus.

                  (c)      Park agrees to advise SNB, promptly after Park
                           receives notice thereof, of the time when the
                           Registration Statement has become effective or any

                                      -43-
   51

                           supplement or amendment has been filed, of the
                           issuance of any stop order or the suspension of the
                           qualification of Park Shares for offering or sale in
                           any jurisdiction, of the initiation or threat of any
                           proceeding for any such purpose, or of any request by
                           the SEC for the amendment or supplement of the
                           Registration Statement or for additional information.

                  7.08.    REGULATORY APPLICATIONS

                  Park and SNB and their respective Subsidiaries shall cooperate
and use their respective reasonable best efforts to prepare all documentation,
to timely effect all filings and to obtain all permits, consents, approvals and
authorizations of all third parties and Governmental Authorities necessary to
consummate the transactions contemplated by this Agreement. Each of Park and SNB
shall have the right to review in advance, and to the extent practicable, each
will consult with the other, in each case subject to applicable laws relating to
the exchange of information, with respect to, and shall be provided in advance
so as to reasonably exercise its right to review in advance, all material
written information submitted to any third party or any Governmental Authority
in connection with the transactions contemplated by this Agreement. In
exercising the foregoing right, each of the parties hereto agrees to act
reasonably and as promptly as practicable. Each party hereto agrees that it will
consult with the other party hereto with respect to the obtaining of all
material permits, consents, approvals and authorizations of all third parties
and Governmental Authorities necessary or advisable to consummate the
transactions contemplated by this Agreement and each party will keep the other
apprised of the status of material matters relating to completion of the
transactions contemplated hereby. Each party agrees, upon request, to furnish
the other party with all information concerning itself, its Subsidiaries,
directors, officers and shareholders and such other matters as may be reasonably
necessary or advisable in connection with any filing, notice or application made
by or on behalf of such other party or of its Subsidiaries to any third party or
Governmental Authority.

                  7.09.    DIVIDENDS

                  After the date of this Agreement, each of SNB and Park shall
coordinate with the other the payment of dividends with respect to the SNB
Shares and the Park Shares and the record dates and payment dates relating
thereto, it being the intention of the parties hereto that the former holders of
SNB Shares shall not receive two dividends, or fail to receive one dividend, for
any single calendar quarter with respect to their SNB Shares and/or the Park
Shares that any such holder receives in exchange for such SNB Shares in the
Merger.

                  7.10.    SUPPLEMENTAL ASSURANCES

                  (a)      On the date the Registration Statement becomes
                           effective and on the Closing Date, SNB shall deliver
                           to Park a certificate signed by its principal
                           executive officer and its principal financial officer
                           to the effect, to such officers' knowledge that the
                           information contained in the Registration Statement
                           relating to the business and financial condition and
                           affairs of

                                      -44-
   52

                           SNB, does not contain any untrue statement of a
                           material fact or omit to state any material fact
                           required to be stated therein or necessary to make
                           the statements therein not misleading in light of the
                           circumstances under which they were made.

                  (b)      On the date the Registration Statement becomes
                           effective and on the Closing Date, Park shall deliver
                           to SNB a certificate signed by its chief executive
                           officer and its chief financial officer to the
                           effect, to such officer's knowledge, that the
                           Registration Statement (other than the information
                           contained therein relating to the business and
                           financial condition and affairs of SNB) does not
                           contain any untrue statement of a material fact or
                           omit to state any material fact required to be stated
                           therein or necessary to make the statements therein
                           not misleading in light of the circumstances under
                           which they were made.

                                  ARTICLE EIGHT
             CONDITIONS PRECEDENT TO THE OBLIGATIONS OF THE PARTIES

                  8.01.    CONDITIONS TO THE OBLIGATIONS OF PARK

                  The obligations of Park under this Agreement shall be subject
to the satisfaction, or written waiver by Park prior to the Closing Date, of
each of the following conditions precedent:

                  (a)      The representations and warranties of SNB set forth
                           in this Agreement shall be true and correct in all
                           material respects as of the date of this Agreement
                           and as of the Closing Date as though such
                           representations and warranties were also made as of
                           the Closing Date, except (i) that those
                           representations and warranties that by their terms
                           speak as of a specific date shall be true and correct
                           as of such date and (ii) where the failure to be so
                           true and correct would not, individually or in the
                           aggregate, have or be reasonably likely to have a
                           material adverse effect on SNB and the Bank; and Park
                           shall have received a certificate, dated the Closing
                           Date, signed on behalf of SNB by the chief executive
                           officer and the chief financial officer of SNB to
                           such effect.

                  (b)      SNB shall have performed in all material respects all
                           of its covenants and obligations under this Agreement
                           to be performed by it on or prior to the Closing
                           Date, including those relating to the Closing, and
                           Park shall have received a certificate, dated the
                           Closing Date, signed on behalf of SNB by the chief
                           executive officer and the chief financial officer of
                           SNB to such effect.

                                      -45-
   53


                  (c)      In the aggregate, an amount of less than ten percent
                           (10%) of the number of Park Shares to be issued in
                           the Merger shall be (i) subject to purchase as
                           fractional Park Share interests, and (ii) Dissenting
                           Shares in connection with the Merger contemplated by
                           this Agreement.

                  (d)      Park shall have received the written opinion of its
                           counsel, dated the Closing Date, to the effect that,
                           on the basis of facts, representations and
                           assumptions set forth in such opinion, the Merger
                           constitutes a tax-free reorganization within the
                           meaning of Section 368(a) of the Code. In rendering
                           its opinion, counsel to Park will require and rely
                           upon representations contained in letters from Park
                           and SNB.

                  (e)      Park shall have received the written opinion of
                           Thompson, Hine & Flory LLP, counsel to SNB, dated the
                           Closing Date, to the effect that, on the basis of the
                           facts, representations and assumptions set forth in
                           the opinion, (i) SNB is a corporation duly organized
                           and in good standing under the laws of the state of
                           Ohio, (ii) this Agreement has been duly approved by
                           the Board of Directors of SNB and duly adopted by the
                           shareholders of SNB, (iii) this Agreement has been
                           duly executed by SNB and constitutes a binding
                           obligation on SNB enforceable in accordance with its
                           terms against SNB, except as the same may be limited
                           by bankruptcy, insolvency, fraudulent conveyance,
                           reorganization, moratorium, and other similar laws
                           relating to or affecting the enforcement of
                           creditors' rights generally, by general equitable
                           principles, regardless of whether enforceability is
                           considered in a proceeding in equity or at law and an
                           implied covenant of good faith and fair dealing, and
                           (iv) that upon the filing of the certificate of
                           merger with the Secretary of State, the Merger shall
                           become effective.

                  (f)      Park shall have received a copy of a statement,
                           issued by SNB pursuant to Section 1.897-2(h) of the
                           regulations issued under the Code, certifying that
                           the SNB Shares are not an U.S. real property interest
                           and dated not more than thirty days prior to the
                           Closing Date.

                  8.02.    CONDITIONS TO THE OBLIGATIONS OF SNB

                  The obligations of SNB under this Agreement shall be subject
to satisfaction, or written waiver by SNB prior to the Closing Date, of each of
the following conditions precedent:

                  (a)      The representations and warranties of Park set forth
                           in this Agreement shall be true and correct in all
                           material respects as of the date of this Agreement
                           and as of the Closing Date as though such
                           representations and warranties were also made as of
                           the Closing Date, except (i) that representations and
                           warranties that by their terms speak as of a specific
                           date shall be true and correct as of such date and
                           (ii) where the failure to

                                      -46-
   54

                           be so true and correct would not, individually or in
                           the aggregate, have or be reasonably likely to have a
                           material adverse effect on Park and its subsidiaries
                           taken as a whole; and SNB shall have received a
                           certificate, dated the Closing Date, signed on behalf
                           of Park by the chief executive officer and the chief
                           financial officer to such effect.

                  (b)      Park shall have performed in all material respects
                           all of its covenants and obligations under this
                           Agreement to be performed by it on or prior to the
                           Closing Date, including those related to the Closing,
                           and SNB shall have received a certificate, dated the
                           Closing Date, signed on behalf of Park by the chief
                           executive officer and the chief financial officer to
                           such effect.

                  (c)      SNB shall have received a letter from McDonald
                           Investments, Inc., dated as of the date of the SNB
                           Proxy Statement, to the effect that, in its opinion
                           as of such date, the consideration to be received by
                           the SNB shareholders in the Merger is fair to the
                           shareholders of SNB from a financial point of view.

                  (d)      SNB shall have received the written opinion of
                           counsel to Park, dated the Closing Date, to the
                           effect that, on the basis of facts, representations
                           and assumptions set forth in such opinion, (i) the
                           Merger constitutes a tax-free reorganization within
                           the meaning of Section 368(a) of the Code, and (ii)
                           no gain or loss will be recognized by shareholders of
                           SNB who receive Park Shares in exchange for SNB
                           Shares, and cash in lieu of fractional Park Share
                           interests, other than the gain or loss to be
                           recognized as to cash received in lieu of fractional
                           Park Share interests. In rendering its opinion,
                           counsel to Park will require and rely upon
                           representations contained in letters from SNB and
                           Park.

                  (e)      SNB shall have received the written opinion of Vorys,
                           Sater, Seymour and Pease LLP, counsel to Park, dated
                           the Closing Date, to the effect that, on the basis of
                           the facts, representations and assumptions set forth
                           in the opinion, (i) Park is a corporation in good
                           standing under the laws of the State of Ohio; (ii)
                           this Agreement has been duly executed by Park and
                           constitutes the binding obligation of Park,
                           enforceable in accordance with its terms against
                           Park, except as the same may be limited by
                           bankruptcy, insolvency, fraudulent conveyance,
                           reorganization, moratorium and other similar laws
                           relating to or affecting the enforcement of
                           creditors' rights generally, by general equitable
                           principles (regardless of whether enforceability is
                           considered in a proceeding in equity or at law) and
                           by an implied covenant of good faith and fair
                           dealing; (iii) the Park Shares to be issued as Merger
                           Shares, when issued, shall be duly authorized, fully
                           paid and non-assessable; and (iv) upon the filing of
                           the appropriate certificate of merger with the
                           Secretary of State, the Merger shall become
                           effective.

                                      -47-
   55

                  8.03.    MUTUAL CONDITIONS

                  The obligations of SNB and Park under this Agreement shall be
subject to the satisfaction, or written waiver by Park and SNB prior to the
Closing Date, of each of the following conditions precedent:

                  (a)      The shareholders of SNB shall have duly adopted this
                           Agreement by the required vote.

                  (b)      All regulatory approvals required to consummate the
                           transactions contemplated by this Agreement shall
                           have been obtained and shall remain in full force and
                           effect and all statutory waiting periods in respect
                           thereof shall have expired and no such approvals or
                           statute, rule or order shall contain any conditions,
                           restrictions or requirements which Park reasonably
                           determines would either before or after the Effective
                           Time (i) have a material adverse effect on Park and
                           its Subsidiaries take as a whole after giving effect
                           to the consummation of the Merger; or (ii) prevent
                           Park from realizing the major portion of the economic
                           benefits of the Merger and the transactions
                           contemplated thereby that Park currently anticipates
                           obtaining.

                  (c)      No Government Authority of competent jurisdiction
                           shall have enacted, issued, promulgated, enforced,
                           threatened, commenced a proceeding with respect to or
                           entered any statute, rule, regulation, judgment,
                           decree, injunction or other order (whether temporary,
                           preliminary or permanent) prohibiting or delaying
                           consummation of the transactions contemplated by this
                           Agreement.

                  (d)      The Registration Statement shall have become
                           effective under the Securities Act and no stop order
                           or similar restraining order suspending the
                           effectiveness of the Registration Statement shall
                           have been issued and no proceeding for that purpose
                           shall have been initiated or, to the knowledge of the
                           parties, threatened by the SEC.

                  (e)      Park shall have received all state securities and
                           "blue sky" permits and other authorizations and
                           approvals necessary to consummate the Merger and the
                           transactions contemplated hereby and no order
                           restraining the ability of Park to issue Park Shares
                           pursuant to the Merger shall have been issued and no
                           proceedings for that purpose shall have been
                           initiated or threatened by any state securities
                           administrator.

                  (f)      Park and SNB shall have received from Ernst & Young
                           LLP, a letter dated the Closing Date, stating its
                           opinion that, based upon the information furnished,
                           the Merger shall qualify for pooling-of-interests
                           accounting treatment.

                                      -48-

   56

                  (g)      The Park Shares to be issued in the Merger shall have
                           been approved for listing on AMEX subject to official
                           notice of issuance.



                                  ARTICLE NINE
                                     CLOSING

                  9.01.    CLOSING

                  The closing (the "Closing") of the transactions contemplated
by this Agreement shall be held at the offices of Park, 50 North Third Street,
Newark, Ohio 43055, commencing at 10:00 a.m., local time, on (a) the date
designated by Park, which date shall not be earlier than the third business day
to occur after the last of the conditions set forth in Article Eight shall have
been satisfied or waived in accordance with the terms of this Agreement
(excluding conditions that, by their terms, cannot be satisfied until the
Closing Date) or later than the last business day of the month in which such
third business day occurs; provided, no such election shall cause the Closing to
occur on a date after that specified in Section 11.01(b)(i) of this Agreement or
after the date or dates on which any Regulatory Authority approval or any
extension thereof expires, or (b) such other date to which the parties agree in
writing. The date of the Closing is sometimes herein called the "Closing Date."

                  9.02.    CLOSING TRANSACTIONS REQUIRED OF PARK

                  At the Closing, Park shall cause all of the following to be
delivered to SNB:

                  (a)      A certificate of merger duly executed by Park in
                           accordance with Section 1701.81 of the OGCL and in
                           appropriate form for filing with the Secretary of
                           State.

                  (b)      The certificates of Park contemplated by Section
                           8.02(a) and (b) of this Agreement.

                  (c)      Copies of resolutions adopted by the directors of
                           Park, approving this Agreement and authorizing the
                           consummation of the transactions described herein,
                           accompanied by a certificate of the secretary or
                           assistant secretary of Park, dated as of the Closing
                           Date, and certifying (i) the date and manner of
                           adoption of each such resolution; and (ii) that each
                           such resolution is in full force and effect, without
                           amendment, as of the Closing Date.

                  (d)      The opinions of counsel to Park contemplated by
                           Sections 8.02(d) and 8.02(e) of this Agreement.

                                      -49-

   57

                  9.03.    CLOSING TRANSACTIONS REQUIRED OF SNB

                  At the Closing, SNB shall cause all of the following to be
delivered to Park:

                  (a)      A certificate of merger duly executed by SNB in
                           accordance with Section 1701.81 of the OGCL and in
                           appropriate form for filing with the Ohio Secretary
                           of State.

                  (b)      The certificates of SNB contemplated by Sections
                           8.01(a) and (b) of this Agreement.

                  (c)      Copies of all resolutions adopted by the directors
                           and shareholders of SNB approving and adopting this
                           Agreement and authorizing the consummation of the
                           transactions described herein, accompanied by a
                           certificate of the secretary or the assistant
                           secretary of SNB, dated as of the Closing Date, and
                           certifying (i) the date and manner of the adoption of
                           each such resolution; and (ii) that each such
                           resolution is in full force and effect, without
                           amendment, as of the Closing Date.

                  (d)      The opinion of counsel to SNB contemplated by Section
                           8.01(e) of this Agreement.

                  (e)      The agreements referred to in Section 5.06 from each
                           Rule 145 Affiliate.

                                   ARTICLE TEN
            NON-SURVIVAL OF REPRESENTATIONS, WARRANTIES AND COVENANTS

                  10.01.   NON-SURVIVAL OF REPRESENTATIONS, WARRANTIES AND
COVENANTS

                  The representations, warranties and covenants of Park and SNB
set forth in this Agreement, or in any document delivered pursuant to the terms
hereof or in connection with the transactions contemplated hereby, shall not
survive the Closing and the consummation of the transactions referred to herein,
other than covenants which by their terms are to survive or be performed after
the Effective Time (including, without limitation, those set forth in Sections
6.02, 6.06, 7.04 and 7.05, this Article Ten and Article Twelve); except that no
such representations, warranties or covenants shall be deemed to be terminated
or extinguished so as to deprive Park (or any director, officer or controlling
person thereof) of any defense in law or equity which otherwise would be
available against the claims of any person, including, without limitation, any
shareholder or former shareholder of either SNB or Park.

                                      -50-
   58

                                 ARTICLE ELEVEN
                                   TERMINATION

                  11.01.   TERMINATION

                  This Agreement may be terminated, and the Merger may be
abandoned, at any time prior to the Effective Time, whether prior to or after
this Agreement has been approved by the shareholders of SNB:

                  (a)      By mutual written agreement of SNB and Park duly
                           authorized by action taken by or on behalf of their
                           respective Boards of Directors;

                  (b)      By either SNB or Park upon written notification to
                           the non-terminating party by the terminating party:

                           (i)      at any time after November 30, 2000 if the
                                    Merger shall not have been consummated on or
                                    prior to such date and such failure to
                                    consummate the Merger is not caused by a
                                    breach of this Agreement by the terminating
                                    party;

                           (ii)     if the approval of this Agreement by the
                                    shareholders of SNB ("SNB Shareholders'
                                    Approval") shall not be obtained by reason
                                    of the failure to obtain the requisite vote
                                    upon a vote held at a meeting of such
                                    shareholders, or any adjournment thereof,
                                    called therefor; or

                           (iii)    the approval of any Governmental Authority
                                    required for consummation of the Merger and
                                    the other transactions contemplated by this
                                    Agreement shall have been denied by final
                                    non-appealable action of such Governmental
                                    Authority.

                  (c)      By Park by providing written notice to SNB:

                           (i)      if prior to the Closing Date, any
                                    representation and warranty of SNB shall
                                    have become untrue such that the condition
                                    set forth at Section 8.01(a) would not be
                                    satisfied and which breach has not been
                                    cured within 30 days following receipt by
                                    SNB of written notice of breach or is
                                    incapable of being cured during such time
                                    period; or

                           (ii)     if SNB shall have failed to comply in any
                                    material respect with any covenant or
                                    agreement on the part of SNB contained in
                                    this Agreement required to be complied with
                                    prior to the date of such termination, which
                                    failure to comply shall not have been cured
                                    within 30 days following receipt by SNB of
                                    written notice of such

                                      -51-

   59

                                    failure to comply or is incapable of being
                                    cured during such time period.

                  (d)      By SNB by providing written notice to Park:

                           (i)      if prior to the Closing Date, any
                                    representation and warranty of Park shall
                                    have become untrue such that the condition
                                    set forth at Section 8.02(a) would not be
                                    satisfied and which breach has not been
                                    cured within 30 days following receipt by
                                    Park of written notice of breach or is
                                    incapable of being cured during such time
                                    period;

                           (ii)     if Park shall have failed to comply in any
                                    material respect with any covenant or
                                    agreement on the part of Park contained in
                                    this Agreement required to be complied with
                                    prior to the date of such termination, which
                                    failure to comply shall not have been cured
                                    within 30 days following receipt by Park of
                                    written notice of such failure to comply or
                                    is incapable of being cured during such time
                                    period;

                           (iii)    if the Board of Directors of SNB determines
                                    in good faith, based upon advice from
                                    outside counsel, that termination of this
                                    Agreement is required for the Board of
                                    Directors of SNB to comply with its
                                    fiduciary duties to shareholders imposed by
                                    law by reason of an Acquisition Proposal
                                    having been made and provided SNB complied
                                    with its obligations under Section 5.04 and
                                    provided further that SNB's ability to
                                    terminate pursuant to this subsection
                                    (d)(iii) is conditioned upon the prior
                                    payment by SNB to Park of any amounts owed
                                    by SNB to Park pursuant to Section 11.02(b);
                                    or

                           (iv)     if the Board of Directors of SNB so
                                    determines by a vote of a majority of the
                                    members of the entire Board, at any time
                                    during the three-day period commencing with
                                    the Determination Date (as defined below) if
                                    both of the following conditions are
                                    satisfied: (A) the Average Closing Price on
                                    the Determination Date shall be less than
                                    $85.71; and (B) the ratio of the Average
                                    Closing Price to the Starting Price (as
                                    defined below), rounded to the nearest one
                                    one-hundredth, shall be less than the number
                                    obtained by dividing the Final Index Price
                                    (as defined below) on the Determination Date
                                    by the Initial Index Price (as defined
                                    below) on the Starting Date (as defined
                                    below), rounded to the nearest one
                                    one-hundredth; except that the termination
                                    notice by SNB shall not be effective and
                                    this Agreement shall not be terminated by
                                    such notice if Park

                                      -52-
   60

                                    gives notice to SNB within five days after
                                    SNB's notice, that Park agrees that for
                                    purposes of calculating the Exchange Ratio,
                                    the number of Merger Shares shall be
                                    increased to the number determined by
                                    dividing $71,611,000 by the Average Closing
                                    Price.

                                    For purposes of this Section 11.01(d)(iv),
                                    the following terms shall have the meanings
                                    indicated:

                                    "Determination Date" shall mean the date on
                                    which the waiting period expires following
                                    the last required approval of a Governmental
                                    Authority with respect to the Merger.

                                    "Final Index Price" shall mean the sum of
                                    the Final Price for each company comprising
                                    the Index Group multiplied by the
                                    appropriate weighting.

                                    "Final Price," with respect to any company
                                    belonging to the Index Group, shall mean the
                                    average of the daily closing sales prices of
                                    a share of common stock of such company, as
                                    reported on the consolidated transactions
                                    reporting system for the market or exchange
                                    on which such common stock is principally
                                    traded, during the period of 20 trading days
                                    ending on the trading day prior to the
                                    Determination Date.

                                    "Index Group" shall mean the 17 bank holding
                                    companies listed below, the common stock of
                                    which shall be publicly traded and as to
                                    which there shall not have been a publicly
                                    announced proposal since the Starting Date
                                    and before the Determination Date for any
                                    such company to be acquired. In the event
                                    that the common stock of any such company
                                    ceases to be publicly traded or a proposal
                                    to acquire any such company is announced
                                    after the Starting Date and before the
                                    Determination Date, such company shall be
                                    removed from the Index Group, and the
                                    weights (which have been determined based on
                                    the number of outstanding shares of common
                                    stock and the market prices of such stock)
                                    attributed to the remaining companies shall
                                    be adjusted proportionately for purposes of
                                    determining the Final Index Price. The 17
                                    bank holding companies and the weights
                                    attributed to them are as follows:




                                              BANK HOLDING COMPANY       TICKER      WEIGHTING
                                              --------------------       ------      ---------
                                                                              
                                    First Merit Corporation               FMER         5.882%
                                    Provident Financial Group Inc.        PFGI         5.882%
                                    Old National Bancorp                  OLDB         5.882%



                                      -53-
   61




                                              BANK HOLDING COMPANY       TICKER      WEIGHTING
                                              --------------------       ------      ---------
                                                                              
                                    Citizens Banking Corporation          CBCF         5.882%
                                    Sky Financial Group Inc.              SKYF         5.882%
                                    Republic Bancorp Inc.                 RBNC         5.882%
                                    First Financial Bancorp.              FFBC         5.882%
                                    1st Source Corporation                SRCE         5.882%
                                    National City Bancshares, Inc.        NCBE         5.882%
                                    Chemical Financial Corporation        CHFC         5.882%
                                    Irwin Financial Corporation           IRWN         5.882%
                                    Second Bancorp, Incorporated          SECD         5.882%
                                    First Merchants Corporation           FRME         5.882%
                                    BancFirst Ohio Corp.                  BFOH         5.882%
                                    Capitol Bancorp Ltd.                  CBCL         5.882%
                                    Independent Bank Corporation          IBCP         5.882%
                                    Peoples Bancorp Inc.                  PEBO         5.882%


                                    "Index Price," on a given date, shall mean
                                    the weighted average (weighted in accordance
                                    with the factors listed above) of the
                                    closing prices on such date of the common
                                    stocks of the companies comprising the Index
                                    Group.

                                    "Initial Index Price" shall mean the sum of
                                    each per share closing price of the common
                                    stock of each company comprising the Index
                                    Group multiplied by the applicable
                                    weighting, as such prices are reported on
                                    the consolidated transactions reporting
                                    system for the market or exchange on which
                                    such common stock is principally traded on
                                    the Starting Date.

                                    "Starting Date" shall mean the last trading
                                    day immediately preceding the date of the
                                    first public announcement of entry into this
                                    Agreement.

                                    "Starting Price" shall mean the closing
                                    price of a Park Share on AMEX (as reported
                                    in The Wall Street Journal, or if not
                                    reported therein, in another authoritative
                                    source) on the Starting Date.

                                    If any company belonging in the Index Group
                                    declares or effects a stock dividend,
                                    reclassification, recapitalization,
                                    split-up, combination, exchange of shares or
                                    similar transaction between the Starting
                                    Date and the Determination Date, the prices
                                    for the common stock of such company shall
                                    be appropriately adjusted for the purposes
                                    of applying this Section 11.01(d)(iv).

                                      -54-
   62

                  11.02.   EFFECT OF TERMINATION.

                  (a)      If this Agreement is validly terminated by either SNB
                           or Park pursuant to Section 11.01, this Agreement
                           will forthwith become null and void and there will be
                           no liability or obligation on the part of either SNB
                           or Park, except (i) that the provisions of Sections
                           5.04, 7.05, 7.06, 7.07(b) and 12.07 and this Section
                           11.02 will continue to apply following any such
                           termination, (ii) that nothing contained herein shall
                           relieve any party hereto from liability for willful
                           breach of its representations, warranties, covenants
                           or agreements contained in this Agreement and (iii)
                           as provided in paragraph (b) below.

                  (b)      In the event that any person or group shall have made
                           an Acquisition Proposal and thereafter (i) this
                           Agreement is terminated by SNB pursuant to Section
                           11.01(d)(iii) or (ii) this Agreement is terminated
                           for any other reason (other than by reason of a
                           breach of this Agreement by Park or termination by
                           either party pursuant to 11.01(b)(iii)) and, in the
                           case of this clause (ii) only, a definitive agreement
                           with respect to such Acquisition Proposal is executed
                           within one year after such termination, then SNB
                           shall pay to Park, by wire transfer of same day
                           funds, either on the date contemplated in Section
                           11.01(d)(iii) if applicable, or otherwise, within two
                           (2) business days after such amount becomes due, a
                           termination fee of $2,000,000.

                  (c)      In the event of a termination of this Agreement
                           pursuant to which a payment is made in full
                           compliance with Section 11.02(b), the receipt of such
                           payment shall serve as liquidated damages with
                           respect to any breach of this Agreement by the party
                           who has made such payment giving rise to such
                           termination, and the receipt of any such payment
                           shall be the sole and exclusive remedy (at law or in
                           equity) with respect to any such breach. In the event
                           any action, suit, proceeding or claim is commenced or
                           asserted by a party against another party and/or any
                           director or officer of such other party relating,
                           directly or indirectly, to this Agreement, it is
                           expressly agreed that no party shall be entitled to
                           obtain any punitive, exemplary, treble, or
                           consequential damages of any type under any
                           circumstances in connection with such action, suit,
                           proceeding or claim, regardless of whether such
                           damages may be available under law, the parties
                           hereby waiving their rights, if any, to recover any
                           such damages in connection with any such action,
                           suit, proceeding or claim.

                                      -55-
   63

                                 ARTICLE TWELVE
                                  MISCELLANEOUS

                  12.01.   NOTICES

                  All notices, requests, demands and other communications
required or permitted to be given under this Agreement shall be given in writing
and shall be deemed to have been given if delivered by hand, by express service,
telecopied (with confirmation of receipt) or sent by certified mail, postage
prepaid, return receipt requested, to the following addresses:

                           If to SNB, to:

                           SNB Corp.
                           499 S. Broadway
                           Greenville, OH  45331
                           Attention:  President
                           Facsimile Number:  (937) 548-2139

                           with a copy to:

                           Thompson Hine & Flory LLP
                           2000 Courthouse Plaza, N.E.
                           Dayton, OH  45402
                           Attention:  Joseph M. Rigot
                           Facsimile Number:  (937) 443-6635

                           If to the Corporation, to:

                           Park National Corporation
                           50 North Third Street
                           Newark, Ohio  43055
                           Attention:  C. Daniel DeLawder
                           Facsimile Number:  (740) 349-3765

                           with a copy to:

                           Vorys, Sater, Seymour and Pease LLP
                           52 East Gay Street
                           P.O. Box 1008
                           Columbus, OH  43216-1008
                           Attention:  Elizabeth Turrell Farrar
                           Facsimile Number:  (614) 719-4708

                                      -56-
   64

Any party to this Agreement may, by notice given in accordance with this
section, designate a new address for notices, requests, demands and other
communications to such party.

                  12.02.   COUNTERPARTS

                  This Agreement may be executed in one or more counterparts,
each of which shall be deemed to be a duplicate original, but all of which taken
together shall be deemed to constitute a single instrument.

                  12.03.   ENTIRE AGREEMENT

                  This Agreement (including each exhibit and schedule provided
pursuant hereto) represents the entire agreement between the parties hereto in
respect of the subject matter of this Agreement and supersedes any and all prior
and contemporaneous agreements between the parties hereto in connection with the
subject matter of this Agreement.

                  12.04.   SUCCESSORS AND ASSIGNS

                  This Agreement shall inure to the benefit of and be binding
upon the respective successors and assigns (including successive, as well as
immediate, successors and assigns) of the parties hereto. This Agreement may not
be assigned by either party hereto without the prior written consent of the
other party.

                  12.05.   CAPTIONS

                  The captions contained in this Agreement are included only for
convenience of reference and do not define, limit, explain or modify this
Agreement or its interpretation, construction or meaning and are in no way to be
construed as part of this Agreement.

                  12.06.   GOVERNING LAW

                  This Agreement shall be governed by, and construed in
accordance with, the laws of the State of Ohio, without giving effect to
principles of conflicts or choice of laws (except to the extent that mandatory
provisions of Federal law are applicable).

                  12.07.   PAYMENT OF FEES AND EXPENSES

                  Except as otherwise agreed in writing, each party hereto shall
pay all costs and expenses, including legal and accounting fees, and all
expenses relating to its performance of, and compliance with, its undertakings
herein, except that printing and mailing expenses shall be shared equally
between SNB and Park. All fees to be paid to Regulatory Authorities and the SEC
in connection with the transactions contemplated by this Agreement shall be
borne by Park.

                                      -57-
   65

                  12.08.   AMENDMENT

                  From time to time and at any time prior to the Effective Time,
this Agreement may be amended only by an agreement in writing executed in the
same manner as this Agreement, after authorization of such action by the Boards
of Directors of the Constituent Corporations; except that after the SNB Meeting,
this Agreement may not be amended if it would violate the OGCL or the federal
securities laws.

                  12.09.   WAIVER

                  The rights and remedies of the parties to this Agreement are
cumulative and not alternative. Neither the failure nor any delay by any party
in exercising any right, power or privilege under this Agreement or the
documents referred to in this Agreement will operate as a waiver of such right,
power or privilege, and no single or partial exercise of any such right, power
or privilege will preclude any other or further exercise of such right, power or
privilege or the exercise of any other right, power or privilege.

                  12.10.   DISCLOSURE SCHEDULES

                  In the event of any inconsistency between the statements in
the body of this Agreement and those in the respective Disclosure Schedules
(other than an exception expressly set forth as such in the Disclosure Schedules
with respect to a specifically identified representation or warranty), the
statements in the body of this Agreement will control.

                  12.11.   NO THIRD-PARTY RIGHTS

                  Except as specifically set forth herein, nothing expressed or
referred to in this Agreement will be construed to give any person other than
the parties to this Agreement any legal or equitable right, remedy or claim
under or with respect to this Agreement or any provision of this Agreement. This
Agreement and all of its provisions and conditions are for the sole and
exclusive benefit of the parties to this Agreement and their successors and
assigns.

                  12.12.   WAIVER OF JURY TRIAL

                  Each of the parties hereto irrevocably waives any and all
right to trial by jury in any legal proceeding arising out of or related to this
Agreement or the transactions contemplated hereby.

                  12.13.   SEVERABILITY

                  If any provision of this Agreement is held invalid or
unenforceable by any court of competent jurisdiction, the other provisions of
this Agreement will remain in full force and effect. Any provision of this
Agreement held invalid or unenforceable only in part or degree will remain in
full force and effect to the extent not held invalid or unenforceable.

                                      -58-

   66

                  IN WITNESS WHEREOF, this Agreement and Plan of Merger has been
executed on behalf of Park National Corporation and SNB Corp. to be effective as
of the date set forth in the first paragraph above.

ATTEST:                                 PARK NATIONAL CORPORATION


____________________________            By:______________________________

                                        Name:____________________________

                                        Title:___________________________



                                      -59-

   67


ATTEST:                                SNB CORP.



______________________________         By:_______________________________

                                       Name:_____________________________

                                       Title:____________________________


                                      -60-
   68
                            Exhibit to Schedules to
                          Agreement and Plan of Merger
                         dated as of December 17, 1999
                                 by and between
                           Park National Corporation
                                 and SNB Corp.
                                 -------------

1.   Exhibit A - Form of SNB Corp. Affiliate Agreement.

2.   Disclosure Schedules.

     The above-described Exhibit and Schedules are not being filed herewith.
Park National agrees to furnish supplementally a copy of any omitted Exhibit or
Schedule to the Securities and Exchange Commission upon request.






                                      -61-