GUARANTEE AGREEMENT

                              PEOPLES BANCORP INC.

                           Dated as of April 10, 2002






                                TABLE OF CONTENTS
                                                                                           Page

                                                                                    
ARTICLE I             DEFINITIONS AND INTERPRETATION..........................................1
         SECTION 1.1     Definitions and Interpretation.......................................1


ARTICLE II            POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE......................4
         SECTION 2.1     Powers and Duties of the Guarantee Trustee...........................4
         SECTION 2.2     Certain Rights of the Guarantee Trustee..............................5
         SECTION 2.3     Not Responsible for Recitals or Issuance of Guarantee................7
         SECTION 2.4     Events of Default; Waiver............................................7
         SECTION 2.5     Events of Default; Notice............................................8

ARTICLE III           THE GUARANTEE TRUSTEE...................................................8
         SECTION 3.1     The Guarantee Trustee; Eligibility...................................8
         SECTION 3.2     Appointment, Removal and Resignation of the Guarantee Trustee........9

ARTICLE IV            GUARANTEE ..............................................................9
         SECTION 4.1     Guarantee............................................................9
         SECTION 4.2     Waiver of Notice and Demand.........................................10
         SECTION 4.3     Obligations Not Affected............................................10
         SECTION 4.4     Rights of Holders...................................................11
         SECTION 4.5     Guarantee of Payment................................................11
         SECTION 4.6     Subrogation.........................................................11
         SECTION 4.7     Independent Obligations.............................................11
         SECTION 4.8     Enforcement.........................................................12

ARTICLE V             LIMITATION OF TRANSACTIONS; SUBORDINATION..............................12
         SECTION 5.1     Limitation of Transactions..........................................12
         SECTION 5.2     Ranking.............................................................13

ARTICLE VI            TERMINATION............................................................13
         SECTION 6.1     Termination.........................................................13

ARTICLE VII           INDEMNIFICATION........................................................13
         SECTION 7.1     Exculpation.........................................................13
         SECTION 7.2     Indemnification.....................................................14
         SECTION 7.3     Compensation; Reimbursement of Expenses.............................15

ARTICLE VIII          MISCELLANEOUS..........................................................15
         SECTION 8.1     Successors and Assigns..............................................15
         SECTION 8.2     Amendments..........................................................16
         SECTION 8.3     Notices.............................................................16
         SECTION 8.4     Benefit.............................................................17
         SECTION 8.5     Governing Law.......................................................17
         SECTION 8.6     Counterparts........................................................17









                               GUARANTEE AGREEMENT
                               -------------------

                  This GUARANTEE AGREEMENT (the "Guarantee"), dated as of April
10, 2002, is executed and delivered by Peoples Bancorp Inc., a bank holding
company incorporated in Ohio (the "Guarantor"), and Wilmington Trust Company, a
Delaware banking corporation, as trustee (the "Guarantee Trustee"), for the
benefit of the Holders (as defined herein) from time to time of the Capital
Securities (as defined herein) of PEBO Capital Trust II, a Delaware statutory
business trust (the "Issuer").

                  WHEREAS, pursuant to an Amended and Restated Declaration of
Trust (the "Declaration"), dated as of April 10, 2002, among the trustees named
therein of the Issuer, Peoples Bancorp Inc., as sponsor, and the Holders from
time to time of undivided beneficial interests in the assets of the Issuer, the
Issuer is issuing on the date hereof securities, having an aggregate liquidation
amount of up to $7,000,000, designated the Floating Rate MMCapSSM (the "Capital
Securities"); and

                  WHEREAS, as incentive for the Holders to purchase the Capital
Securities, the Guarantor desires irrevocably and unconditionally to agree, to
the extent set forth in this Guarantee, to pay to the Holders of Capital
Securities the Guarantee Payments (as defined herein) and to make certain other
payments on the terms and conditions set forth herein.

                  NOW, THEREFORE, in consideration of the purchase by each
Holder of the Capital Securities, which purchase the Guarantor hereby agrees
shall benefit the Guarantor, the Guarantor executes and delivers this Guarantee
for the benefit of the Holders.

                                   ARTICLE I

                         DEFINITIONS AND INTERPRETATION

SECTION 1.1  DEFINITIONS AND INTERPRETATION.
             -------------------------------
                  In this Guarantee, unless the context otherwise requires:

     (a)  capitalized  terms  used in this  Guarantee  but  not  defined  in the
preamble  above have the  respective  meanings  assigned to them in this Section
1.1;

     (b) a term  defined  anywhere  in  this  Guarantee  has  the  same  meaning
throughout;

     (c) all  references  to "the  Guarantee"  or "this  Guarantee"  are to this
Guarantee as modified, supplemented or amended from time to time;

     (d) all  references  in this  Guarantee  to Articles  and  Sections  are to
Articles and Sections of this Guarantee, unless otherwise specified;

     (e) terms  defined in the  Declaration  as at the date of execution of this
Guarantee have the same meanings when used in this Guarantee,  unless  otherwise
defined in this Guarantee or unless the context otherwise requires; and

     (f) a reference to the singular includes the plural and vice versa.


                  "Beneficiaries" means any Person to whom the Issuer is or
hereafter becomes indebted or liable.

                  "Corporate Trust Office" means the office of the Guarantee
Trustee at which the corporate trust business of the Guarantee Trustee shall, at
any particular time, be principally administered, which office at the date of
execution of this Guarantee is located at Rodney Square North, 1100 North Market
Street, Wilmington, Delaware 19890-0001.

                  "Covered Person" means any Holder of Capital Securities.

                  "Debentures" means the junior subordinated debentures of
Peoples Bancorp Inc., designated the Floating Rate Junior Subordinated Debt
Securities due 2032, held by the Institutional Trustee (as defined in the
Declaration) of the Issuer.

                   "Event of Default" has the meaning set forth in Section 2.4.

                  "Guarantee Payments" means the following payments or
distributions, without duplication, with respect to the Capital Securities, to
the extent not paid or made by the Issuer: (i) any accrued and unpaid
Distributions (as defined in the Declaration) which are required to be paid on
such Capital Securities to the extent the Issuer has funds available in the
Property Account (as defined in the Declaration) therefor at such time, (ii) the
Redemption Price (as defined in the Indenture) to the extent the Issuer has
funds available in the Property Account therefor at such time, with respect to
any Capital Securities called for redemption by the Issuer, (iii) the Special
Redemption Price (as defined in the Indenture) to the extent the Issuer has
funds available in the Property Account therefor at such time, with respect to
Capital Securities called for redemption upon the occurrence of a Special Event
(as defined in the Indenture), and (iv) upon a voluntary or involuntary
liquidation, dissolution, winding-up or termination of the Issuer (other than in
connection with the distribution of Debentures to the Holders of the Capital
Securities in exchange therefor as provided in the Declaration), the lesser of
(a) the aggregate of the liquidation amount and all accrued and unpaid
Distributions on the Capital Securities to the date of payment, to the extent
the Issuer has funds available in the Property Account therefor at such time,
and (b) the amount of assets of the Issuer remaining available for distribution
to Holders in liquidation of the Issuer after satisfaction of liabilities to
creditors of the Issuer as required by applicable law (in either case, the
"Liquidation Distribution").

                  "Guarantee Trustee" means Wilmington Trust Company, until a
Successor Guarantee Trustee has been appointed and has accepted such appointment
pursuant to the terms of this Guarantee and thereafter means each such Successor
Guarantee Trustee.

                  "Holder" means any holder, as registered on the books and
records of the Issuer, of any Capital Securities; PROVIDED, HOWEVER, that, in
determining whether the holders of the requisite percentage of Capital
Securities have given any request, notice, consent or waiver hereunder, "Holder"
shall not include the Guarantor or any Affiliate of the Guarantor.

                  "Indemnified Person" means the Guarantee Trustee, any
Affiliate of the Guarantee Trustee (including in its individual capacity), or
any officers, directors, shareholders, members, partners, employees,
representatives, nominees, custodians or agents of the Guarantee Trustee.



                  "Indenture" means the Indenture, dated as of April 10, 2002,
between the Guarantor and Wilmington Trust Company, not in its individual
capacity but solely as trustee, and any indenture supplemental thereto pursuant
to which the Debentures are to be issued to the Institutional Trustee of the
Issuer.

                  "Liquidation  Distribution"  has the meaning set forth in the
definition of "Guarantee  Payments" herein.

                  "Majority in liquidation amount of the Capital Securities"
means Holder(s) of outstanding Capital Securities, voting together as a class,
but separately from the holders of Common Securities, of more than 50% of the
aggregate liquidation amount (including the stated amount that would be paid on
redemption, liquidation or otherwise, plus accrued and unpaid Distributions to,
but excluding, the date upon which the voting percentages are determined) of all
Capital Securities then outstanding.

                  "Obligations" means any costs, expenses or liabilities (but
not including liabilities related to taxes) of the Issuer, other than
obligations of the Issuer to pay to holders of any Trust Securities the amounts
due such holders pursuant to the terms of the Trust Securities.

                  "Officer's Certificate" means, with respect to any Person, a
certificate signed by one Authorized Officer of such Person. Any Officer's
Certificate delivered with respect to compliance with a condition or covenant
provided for in this Guarantee shall include:

     (a) a statement  that each officer  signing the Officer's  Certificate  has
read the covenant or condition and the definitions relating thereto;

     (b) a brief  statement  of the  nature  and  scope  of the  examination  or
investigation undertaken by each officer in rendering the Officer's Certificate;

     (c) a  statement  that  each such  officer  has made  such  examination  or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed  opinion as to whether or not such  covenant or condition
has been complied with; and

     (d) a statement as to whether,  in the opinion of each such  officer,  such
condition or covenant has been complied with.

                  "Person" means a legal person, including any individual,
corporation, estate, partnership, joint venture, association, joint stock
company, limited liability company, trust, unincorporated association, or
government or any agency or political subdivision thereof, or any other entity
of whatever nature.

                  "Responsible Officer" means, with respect to the Guarantee
Trustee, any officer within the Corporate Trust Office of the Guarantee Trustee
with direct responsibility for the administration of any matters relating to
this Guarantee, including any vice president, any assistant vice president, any
secretary, any assistant secretary, the treasurer, any assistant treasurer, any
trust officer or other officer of the Corporate Trust Office of the Guarantee
Trustee customarily performing functions similar to those performed by any of
the above designated officers and also means, with respect to a particular
corporate trust matter, any other officer to whom such matter is referred
because of that officer's knowledge of and familiarity with the particular
subject.



                  "Successor Guarantee Trustee" means a successor Guarantee
Trustee possessing the qualifications to act as Guarantee Trustee under Section
3.1.

                  "Trust Securities" means the Common Securities and the Capital
Securities.


                                   ARTICLE II

               POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE

SECTION 2.1       POWERS AND DUTIES OF THE GUARANTEE TRUSTEE.
                  ------------------------------------------

     (a) This Guarantee  shall be held by the Guarantee  Trustee for the benefit
of the Holders of the Capital  Securities,  and the Guarantee  Trustee shall not
transfer  this  Guarantee  to any Person  except a Holder of Capital  Securities
exercising  his or her  rights  pursuant  to Section  4.4 (b) or to a  Successor
Guarantee  Trustee on  acceptance  by such  Successor  Guarantee  Trustee of its
appointment to act as Successor Guarantee Trustee. The right, title and interest
of the Guarantee  Trustee shall  automatically  vest in any Successor  Guarantee
Trustee,  and such vesting and cessation of title shall be effective  whether or
not  conveyancing  documents  have been executed and  delivered  pursuant to the
appointment of such Successor Guarantee Trustee.

     (b) If an Event of Default  actually known to a Responsible  Officer of the
Guarantee  Trustee has occurred and is continuing,  the Guarantee  Trustee shall
enforce this Guarantee for the benefit of the Holders of the Capital Securities.

     (c) The Guarantee  Trustee,  before the  occurrence of any Event of Default
and after the curing or waiving of all Events of Default that may have occurred,
shall  undertake  to perform only such duties as are  specifically  set forth in
this  Guarantee,  and no  implied  covenants  shall be read into this  Guarantee
against the Guarantee  Trustee.  In case an Event of Default has occurred  (that
has not been cured or waived  pursuant to Section  2.4(b)) and is actually known
to a Responsible  Officer of the Guarantee Trustee,  the Guarantee Trustee shall
exercise such of the rights and powers vested in it by this  Guarantee,  and use
the same degree of care and skill in its exercise  thereof,  as a prudent person
would exercise or use under the  circumstances  in the conduct of his or her own
affairs.

     (d) No  provision  of this  Guarantee  shall be  construed  to relieve  the
Guarantee Trustee from liability for its own negligent action, its own negligent
failure to act, or its own willful misconduct, except that:

          (i)  prior to the  occurrence  of any Event of  Default  and after the
               curing  or  waiving  of all  Events  of  Default  that  may  have
               occurred:



               (A)  the duties and obligations of the Guarantee Trustee shall be
                    determined   solely  by  the  express   provisions  of  this
                    Guarantee,  and the  Guarantee  Trustee  shall not be liable
                    except for the performance of such duties and obligations as
                    are specifically set forth in this Guarantee, and no implied
                    covenants or  obligations  shall be read into this Guarantee
                    against the Guarantee Trustee; and

               (B)  in the  absence  of bad  faith on the part of the  Guarantee
                    Trustee,  the Guarantee Trustee may conclusively rely, as to
                    the  truth  of the  statements  and the  correctness  of the
                    opinions  expressed   therein,   upon  any  certificates  or
                    opinions  furnished to the Guarantee  Trustee and conforming
                    to the  requirements of this  Guarantee;  but in the case of
                    any such certificates or opinions furnished to the Guarantee
                    Trustee,  the  Guarantee  Trustee  shall  be under a duty to
                    examine the same to  determine  whether or not on their face
                    they conform to the requirements of this Guarantee;

     (ii) the  Guarantee  Trustee  shall not be liable for any error of judgment
made in good faith by a Responsible Officer of the Guarantee Trustee,  unless it
shall be proved that such  Responsible  Officer of the Guarantee  Trustee or the
Guarantee  Trustee was negligent in ascertaining  the pertinent facts upon which
such judgment was made;

     (iii) the Guarantee  Trustee shall not be liable with respect to any action
taken or omitted to be taken by it in good faith in accordance  with the written
direction  of the Holders of not less than a Majority in  liquidation  amount of
the Capital Securities  relating to the time, method and place of conducting any
proceeding for any remedy available to the Guarantee Trustee,  or exercising any
trust or power conferred upon the Guarantee Trustee under this Guarantee; and

     (iv) no provision of this Guarantee shall require the Guarantee  Trustee to
expend or risk its own funds or otherwise incur personal financial  liability in
the  performance of any of its duties or in the exercise of any of its rights or
powers,  if the Guarantee  Trustee shall have  reasonable  grounds for believing
that the repayment of such funds is not reasonably assured to it under the terms
of this  Guarantee,  or security and indemnity,  reasonably  satisfactory to the
Guarantee  Trustee,  against such risk or liability is not reasonably assured to
it.

SECTION 2.2       CERTAIN RIGHTS OF THE GUARANTEE TRUSTEE.
                  ---------------------------------------

     (a) Subject to the provisions of Section 2.1:

               (i)  The Guarantee  Trustee may  conclusively  rely, and shall be
                    fully  protected in acting or  refraining  from acting upon,
                    any resolution, certificate, statement, instrument, opinion,
                    report, notice,  request,  direction,  consent, order, bond,
                    debenture,  note,  other evidence of  indebtedness  or other
                    paper or  document  believed by it to be genuine and to have
                    been  signed,  sent or  presented  by the  proper  party  or
                    parties.



               (ii) Any direction or act of the Guarantor  contemplated  by this
                    Guarantee  shall be  sufficiently  evidenced by an Officer's
                    Certificate.

               (iii)Whenever,  in the  administration  of  this  Guarantee,  the
                    Guarantee  Trustee shall deem it desirable  that a matter be
                    proved or established  before taking,  suffering or omitting
                    any action  hereunder,  the Guarantee  Trustee (unless other
                    evidence  is herein  specifically  prescribed)  may,  in the
                    absence of bad faith on its part,  request and  conclusively
                    rely upon an Officer's  Certificate of the Guarantor  which,
                    upon receipt of such request, shall be promptly delivered by
                    the Guarantor.

               (iv) The  Guarantee  Trustee  shall  have  no  duty to see to any
                    recording, filing or registration of any instrument or other
                    writing  (or any  rerecording,  refiling  or  reregistration
                    thereof).

               (v)  The  Guarantee  Trustee  may  consult  with  counsel  of its
                    selection,  and the advice or opinion of such  counsel  with
                    respect  to  legal   matters  shall  be  full  and  complete
                    authorization and protection in respect of any action taken,
                    suffered  or  omitted by it  hereunder  in good faith and in
                    accordance with such advice or opinion.  Such counsel may be
                    counsel to the  Guarantor or any of its  Affiliates  and may
                    include any of its  employees.  The Guarantee  Trustee shall
                    have the right at any time to seek  instructions  concerning
                    the  administration  of this  Guarantee  from  any  court of
                    competent jurisdiction.

               (vi) The  Guarantee  Trustee  shall  be under  no  obligation  to
                    exercise  any of the  rights or powers  vested in it by this
                    Guarantee at the request or direction of any Holder,  unless
                    such Holder  shall have  provided to the  Guarantee  Trustee
                    such security and indemnity,  reasonably satisfactory to the
                    Guarantee Trustee,  against the costs,  expenses  (including
                    attorneys'  fees  and  expenses  and  the  expenses  of  the
                    Guarantee  Trustee's  agents,  nominees or  custodians)  and
                    liabilities  that might be incurred by it in complying  with
                    such  request  or  direction,   including  such   reasonable
                    advances  as may be  requested  by  the  Guarantee  Trustee;
                    PROVIDED,  HOWEVER,  that nothing  contained in this Section
                    2.2(a)(vi) shall be taken to relieve the Guarantee  Trustee,
                    upon  the  occurrence  of  an  Event  of  Default,   of  its
                    obligation to exercise the rights and powers vested in it by
                    this Guarantee.

               (vii)The  Guarantee  Trustee  shall  not be  bound  to  make  any
                    investigation  into  the  facts  or  matters  stated  in any
                    resolution,  certificate,  statement,  instrument,  opinion,
                    report, notice,  request,  direction,  consent, order, bond,
                    debenture,  note,  other evidence of  indebtedness  or other
                    paper  or  document,  but  the  Guarantee  Trustee,  in  its
                    discretion,  may make such further inquiry or  investigation
                    into such facts or matters as it may see fit.

               (viii) The  Guarantee  Trustee  may  execute any of the trusts or
                    powers  hereunder  or perform  any duties  hereunder  either
                    directly or by or through  agents,  nominees,  custodians or
                    attorneys,   and  the   Guarantee   Trustee   shall  not  be
                    responsible  for any misconduct or negligence on the part of
                    any  agent  or  attorney  appointed  with  due  care  by  it
                    hereunder.



               (ix) Any  action  taken by the  Guarantee  Trustee  or its agents
                    hereunder shall bind the Holders of the Capital  Securities,
                    and the  signature  of the  Guarantee  Trustee or its agents
                    alone shall be sufficient  and effective to perform any such
                    action.  No third  party  shall be required to inquire as to
                    the  authority of the  Guarantee  Trustee to so act or as to
                    its compliance  with any of the terms and provisions of this
                    Guarantee,  both of which shall be conclusively evidenced by
                    the Guarantee Trustee's or its agent's taking such action.

               (x)  Whenever  in  the   administration  of  this  Guarantee  the
                    Guarantee   Trustee  shall  deem  it  desirable  to  receive
                    instructions  with respect to enforcing  any remedy or right
                    or taking any other action hereunder,  the Guarantee Trustee
                    (A) may request  instructions from the Holders of a Majority
                    in  liquidation  amount of the Capital  Securities,  (B) may
                    refrain from  enforcing  such remedy or right or taking such
                    other  action until such  instructions  are received and (C)
                    shall be protected in  conclusively  relying on or acting in
                    accordance with such instructions.

               (xi) The  Guarantee  Trustee  shall not be liable  for any action
                    taken,  suffered, or omitted to be taken by it in good faith
                    and reasonably believed by it to be authorized or within the
                    discretion  or rights or  powers  conferred  upon it by this
                    Guarantee.

     (b) No  provision of this  Guarantee  shall be deemed to impose any duty or
obligation on the  Guarantee  Trustee to perform any act or acts or exercise any
right, power, duty or obligation conferred or imposed on it, in any jurisdiction
in which it  shall  be  illegal  or in  which  the  Guarantee  Trustee  shall be
unqualified or incompetent in accordance with applicable law to perform any such
act or acts or to  exercise  any  such  right,  power,  duty or  obligation.  No
permissive  power or  authority  available  to the  Guarantee  Trustee  shall be
construed to be a duty.

SECTION 2.3 NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF GUARANTEE.
            ------------------------------------------------------

                  The recitals contained in this Guarantee shall be taken as the
statements of the Guarantor, and the Guarantee Trustee does not assume any
responsibility for their correctness. The Guarantee Trustee makes no
representation as to the validity or sufficiency of this Guarantee.

SECTION 2.4       EVENTS OF DEFAULT; WAIVER.
                  --------------------------

     (a) An Event of Default under this Guarantee will occur upon the failure of
the Guarantor to perform any of its payment or other obligations hereunder.

     (b)  The  Holders  of a  Majority  in  liquidation  amount  of the  Capital
Securities may, voting or consenting as a class, on behalf of the Holders of all
of the Capital Securities, waive any past Event of Default and its consequences.
Upon such waiver,  any such Event of Default shall cease to exist,  and shall be
deemed to have been  cured,  for every  purpose of this  Guarantee,  but no such
waiver shall extend to any  subsequent  or other  default or Event of Default or
impair any right consequent thereon.



SECTION 2.5       EVENTS OF DEFAULT; NOTICE.
                  --------------------------

     (a) The Guarantee Trustee shall,  within 90 days after the occurrence of an
Event of Default,  transmit by mail, first class postage prepaid, to the Holders
of the Capital Securities,  notices of all Events of Default actually known to a
Responsible  Officer of the  Guarantee  Trustee,  unless such defaults have been
cured before the giving of such notice,  provided,  however,  that the Guarantee
Trustee  shall be  protected  in  withholding  such  notice  if and so long as a
Responsible  Officer of the Guarantee  Trustee in good faith determines that the
withholding  of such  notice is in the  interests  of the Holders of the Capital
Securities.

     (b) The Guarantee  Trustee shall not be charged with knowledge of any Event
of Default  unless the  Guarantee  Trustee shall have  received  written  notice
thereof  from  the  Guarantor  or a  Holder  of  the  Capital  Securities,  or a
Responsible  Officer of the Guarantee Trustee charged with the administration of
this Guarantee shall have actual knowledge thereof.


                                  ARTICLE III

                              THE GUARANTEE TRUSTEE

SECTION 3.1       THE GUARANTEE TRUSTEE; ELIGIBILITY.
                  -----------------------------------

     (a) There shall at all times be a Guarantee Trustee which shall:

               (i)  not be an Affiliate of the Guarantor; and

               (ii) be a corporation organized and doing business under the laws
                    of the United  States of  America or any State or  Territory
                    thereof or of the District of Columbia, or Person authorized
                    under such laws to exercise corporate trust powers, having a
                    combined  capital  and  surplus of at least 50 million  U.S.
                    dollars   ($50,000,000),   and  subject  to  supervision  or
                    examination  by Federal,  State,  Territorial or District of
                    Columbia authority. If such corporation publishes reports of
                    condition  at  least  annually,  pursuant  to  law or to the
                    requirements  of  the  supervising  or  examining  authority
                    referred to above,  then,  for the  purposes of this Section
                    3.1(a)(ii),   the  combined  capital  and  surplus  of  such
                    corporation  shall be deemed to be its combined  capital and
                    surplus as set forth in its most recent  report of condition
                    so published.

     (b) If at any time the  Guarantee  Trustee shall cease to be eligible to so
act under Section 3.1(a),  the Guarantee Trustee shall immediately resign in the
manner and with the effect set forth in Section 3.2(c).

     (c)  If the  Guarantee  Trustee  has  or  shall  acquire  any  "conflicting
interest"  within the meaning of Section 310(b) of the Trust  Indenture Act, the
Guarantee  Trustee shall either  eliminate such interest or resign to the extent
and in the manner provided by, and subject to, this Guarantee.



SECTION 3.2 APPOINTMENT, REMOVAL AND RESIGNATION OF THE GUARANTEE TRUSTEE.
            --------------------------------------------------------------

     (a) Subject to Section  3.2(b),  the Guarantee  Trustee may be appointed or
removed  without  cause at any time by the  Guarantor  except during an Event of
Default.

     (b) The Guarantee  Trustee shall not be removed in accordance  with Section
3.2(a) until a Successor  Guarantee  Trustee has been appointed and has accepted
such  appointment by written  instrument  executed by such  Successor  Guarantee
Trustee and delivered to the Guarantor.

     (c) The  Guarantee  Trustee  appointed  to office shall hold office until a
Successor  Guarantee  Trustee shall have been  appointed or until its removal or
resignation.  The  Guarantee  Trustee may resign from office  (without  need for
prior or subsequent  accounting)  by an  instrument  in writing  executed by the
Guarantee  Trustee and delivered to the Guarantor,  which  resignation shall not
take effect  until a Successor  Guarantee  Trustee  has been  appointed  and has
accepted such appointment by an instrument in writing executed by such Successor
Guarantee  Trustee and delivered to the  Guarantor  and the resigning  Guarantee
Trustee.

     (d) If no  Successor  Guarantee  Trustee  shall  have  been  appointed  and
accepted  appointment  as  provided  in this  Section  3.2  within 60 days after
delivery of an  instrument  of removal or  resignation,  the  Guarantee  Trustee
resigning or being removed may petition any court of competent  jurisdiction for
appointment of a Successor  Guarantee Trustee.  Such court may thereupon,  after
prescribing  such  notice,  if any, as it may deem  proper,  appoint a Successor
Guarantee Trustee.

     (e) No Guarantee  Trustee  shall be liable for the acts or omissions to act
of any Successor Guarantee Trustee.

     (f) Upon  termination  of this  Guarantee or removal or  resignation of the
Guarantee Trustee pursuant to this Section 3.2, the Guarantor shall pay to the
Guarantee Trustee all amounts owing to the Guarantee Trustee under Sections 7.2
and 7.3 accrued to the date of such termination, removal or resignation.


                                   ARTICLE IV

                                    GUARANTEE

SECTION 4.1       GUARANTEE.
                  ----------

     (a) The Guarantor irrevocably and unconditionally  agrees to pay in full to
the Holders the Guarantee Payments (without  duplication of amounts  theretofore
paid by the  Issuer),  as and when due,  regardless  of any  defense  (except as
defense of payment by the  Issuer),  right of set-off or  counterclaim  that the
Issuer  may have or  assert.  The  Guarantor's  obligation  to make a  Guarantee
Payment  may be  satisfied  by direct  payment  of the  required  amounts by the
Guarantor  to the  Holders or by causing  the Issuer to pay such  amounts to the
Holders.

     (b) The Guarantor  hereby also agrees to assume any and all  Obligations of
the Issuer and in the event any such  Obligation  is not so assumed,  subject to
the  terms  and  conditions   hereof,   the  Guarantor  hereby  irrevocably  and
unconditionally  guarantees to each  Beneficiary  the full payment,  when and as
due,  of any and  all  Obligations  to such  Beneficiaries.  This  Guarantee  is
intended to be for the Beneficiaries who have received notice hereof.



SECTION 4.2       WAIVER OF NOTICE AND DEMAND.
                  ----------------------------

                  The Guarantor hereby waives notice of acceptance of this
Guarantee and of any liability to which it applies or may apply, presentment,
demand for payment, any right to require a proceeding first against the Issuer
or any other Person before proceeding against the Guarantor, protest, notice of
nonpayment, notice of dishonor, notice of redemption and all other notices and
demands.

SECTION 4.3       OBLIGATIONS NOT AFFECTED.
                  -------------------------

                  The obligations, covenants, agreements and duties of the
Guarantor under this Guarantee shall in no way be affected or impaired by reason
of the happening from time to time of any of the following:

     (a) the  release  or  waiver,  by  operation  of law or  otherwise,  of the
performance  or  observance  by the Issuer of any express or implied  agreement,
covenant,  term or condition  relating to the Capital Securities to be performed
or observed by the Issuer;

     (b) the  extension  of time for the  payment  by the  Issuer  of all or any
portion  of the  Distributions,  Redemption  Price,  Special  Redemption  Price,
Liquidation  Distribution  or any  other  sums  payable  under  the terms of the
Capital  Securities  or the extension of time for the  performance  of any other
obligation under,  arising out of, or in connection with, the Capital Securities
(other  than  an  extension  of  time  for  the  payment  of the  Distributions,
Redemption Price,  Special Redemption Price,  Liquidation  Distribution or other
sums payable that results from the extension of any interest  payment  period on
the Debentures or any extension of the maturity date of the Debentures permitted
by the Indenture);

     (c) any  failure,  omission,  delay or lack of diligence on the part of the
Holders to enforce,  assert or exercise  any right,  privilege,  power or remedy
conferred on the Holders pursuant to the terms of the Capital Securities, or any
action on the part of the Issuer granting indulgence or extension of any kind;

     (d) the  voluntary or  involuntary  liquidation,  dissolution,  sale of any
collateral, receivership,  insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization,  arrangement, composition or readjustment of debt of,
or other similar proceedings  affecting,  the Issuer or any of the assets of the
Issuer;

     (e) any invalidity of, or defect or deficiency in, the Capital Securities;

     (f) the  settlement or compromise of any  obligation  guaranteed  hereby or
hereby incurred; or



     (g) any other  circumstance  whatsoever that might  otherwise  constitute a
legal or equitable  discharge or defense of a guarantor,  it being the intent of
this  Section  4.3 that the  obligations  of the  Guarantor  hereunder  shall be
absolute and unconditional under any and all circumstances.

                  There shall be no obligation of the Holders to give notice to,
or obtain consent of, the Guarantor with respect to the happening of any of the
foregoing.

SECTION 4.4       RIGHTS OF HOLDERS.
                  ------------------

     (a)  The  Holders  of a  Majority  in  liquidation  amount  of the  Capital
Securities have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Guarantee  Trustee in respect of this
Guarantee  or to direct the  exercise of any trust or power  conferred  upon the
Guarantee  Trustee under this  Guarantee;  provided,  however,  that (subject to
Sections 2.1 and 2.2) the  Guarantee  Trustee shall have the right to decline to
follow any such  direction if the  Guarantee  Trustee shall  determine  that the
actions so directed would be unjustly prejudicial to the Holders not taking part
in  such  direction  or if  the  Guarantee  Trustee  being  advised  by  counsel
determines  that the action or  proceeding so directed may not lawfully be taken
or if the Guarantee Trustee in good faith by its board of directors or trustees,
executive  committee  or a trust  committee  of  directors  or  trustees  and/or
Responsible  Officers shall  determine that the action or proceeding so directed
would involve the  Guarantee  Trustee in personal  liability.

     (b) Any Holder of  Capital  Securities  may  institute  a legal  proceeding
directly  against the Guarantor to enforce the Guarantee  Trustee's rights under
this Guarantee, without first instituting a legal proceeding against the Issuer,
the  Guarantee  Trustee or any other Person.  The Guarantor  waives any right or
remedy to require that any such action be brought first against the Issuer,  the
Guarantee Trustee or any other Person before so proceeding  directly against the
Guarantor.

SECTION 4.5       GUARANTEE OF PAYMENT.
                  ---------------------

                  This Guarantee creates a guarantee of payment and not of
collection.

SECTION 4.6       SUBROGATION.
                  ------------

                  The Guarantor shall be subrogated to all (if any) rights of
the Holders of Capital Securities against the Issuer in respect of any amounts
paid to such Holders by the Guarantor under this Guarantee; provided, however,
that the Guarantor shall not (except to the extent required by applicable
provisions of law) be entitled to enforce or exercise any right that it may
acquire by way of subrogation or any indemnity, reimbursement or other
agreement, in all cases as a result of payment under this Guarantee, if, after
giving effect to any such payment, any amounts are due and unpaid under this
Guarantee. If any amount shall be paid to the Guarantor in violation of the
preceding sentence, the Guarantor agrees to hold such amount in trust for the
Holders and to pay over such amount to the Holders.

SECTION 4.7       INDEPENDENT OBLIGATIONS.
                  ------------------------

                  The Guarantor acknowledges that its obligations hereunder are
independent of the obligations of the Issuer with respect to the Capital
Securities and that the Guarantor shall be liable as principal and as debtor
hereunder to make Guarantee Payments pursuant to the terms of this Guarantee
notwithstanding the occurrence of any event referred to in subsections (a)
through (g), inclusive, of Section 4.3 hereof.



SECTION 4.8       ENFORCEMENT.
                  ------------

                  A Beneficiary may enforce the Obligations of the Guarantor
contained in Section 4.1(b) directly against the Guarantor, and the Guarantor
waives any right or remedy to require that any action be brought against the
Issuer or any other person or entity before proceeding against the Guarantor.

                  The Guarantor shall be subrogated to all rights (if any) of
any Beneficiary against the Issuer in respect of any amounts paid to the
Beneficiaries by the Guarantor under this Guarantee; provided, however, that the
Guarantor shall not (except to the extent required by applicable provisions of
law) be entitled to enforce or exercise any rights that it may acquire by way of
subrogation or any indemnity, reimbursement or other agreement, in all cases as
a result of payment under this Guarantee, if, after giving effect to such
payment, any amounts are due and unpaid under this Guarantee.


                                   ARTICLE V

                    LIMITATION OF TRANSACTIONS; SUBORDINATION

SECTION 5.1       LIMITATION OF TRANSACTIONS.
                  ---------------------------

                  So long as any Capital Securities remain outstanding, if (a)
there shall have occurred and be continuing an Event of Default or (b) the
Guarantor shall have selected an Extension Period as provided in the Declaration
and such period, or any extension thereof, shall have commenced and be
continuing, then the Guarantor may not (x) declare or pay any dividends or
distributions on, or redeem, purchase, acquire, or make a liquidation payment
with respect to, any of the Guarantor's capital stock or (y) make any payment of
principal of or interest or premium, if any, on or repay, repurchase or redeem
any debt securities of the Guarantor that rank pari passu in all respects with
or junior in interest to the Debentures (other than (i) payments under this
Guarantee, (ii) repurchases, redemptions or other acquisitions of shares of
capital stock of the Guarantor (A) in connection with any employment contract,
benefit plan or other similar arrangement with or for the benefit of one or more
employees, officers, directors, or consultants, (B) in connection with a
dividend reinvestment or stockholder stock purchase plan or (C) in connection
with the issuance of capital stock of the Guarantor (or securities convertible
into or exercisable for such capital stock), as consideration in an acquisition
transaction entered into prior to the occurrence of the Event of Default or the
applicable Extension Period, (iii) as a result of any exchange or conversion of
any class or series of the Guarantor's capital stock (or any capital stock of a
subsidiary of the Guarantor) for any class or series of the Guarantor's capital
stock or of any class or series of the Guarantor's indebtedness for any class or
series of the Guarantor's capital stock, (iv) the purchase of fractional
interests in shares of the Guarantor's capital stock pursuant to the conversion
or exchange provisions of such capital stock or the security being converted or
exchanged, (v) any declaration of a dividend in connection with any
stockholder's rights plan, or the issuance of rights, stock or other property
under any stockholder's rights plan, or the redemption or repurchase of rights
pursuant thereto, or (vi) any dividend in the form of stock, warrants, options
or other rights where the dividend stock or the stock issuable upon exercise of
such warrants, options or other rights is the same stock as that on which the
dividend is being paid or ranks pari passu with or junior to such stock).



SECTION 5.2       RANKING.
                  -------

                  This Guarantee will constitute an unsecured obligation of the
Guarantor and will rank subordinate and junior in right of payment to all
present and future Senior Indebtedness (as defined in the Indenture) of the
Guarantor. By their acceptance thereof, each Holder of Capital Securities agrees
to the foregoing provisions of this Guarantee and the other terms set forth
herein.

                  The right of the Guarantor to participate in any distribution
of assets of any of its subsidiaries upon any such subsidiary's liquidation or
reorganization or otherwise is subject to the prior claims of creditors of that
subsidiary, except to the extent the Guarantor may itself be recognized as a
creditor of that subsidiary. Accordingly, the Guarantor's obligations under this
Guarantee will be effectively subordinated to all existing and future
liabilities of the Guarantor's subsidiaries, and claimants should look only to
the assets of the Guarantor for payments thereunder. This Guarantee does not
limit the incurrence or issuance of other secured or unsecured debt of the
Guarantor, including Senior Indebtedness of the Guarantor, under any indenture
or agreement that the Guarantor may enter into in the future or otherwise.


                                   ARTICLE VI

                                   TERMINATION

SECTION 6.1       TERMINATION.
                  ------------

                  This Guarantee shall terminate as to the Capital Securities
(i) upon full payment of the Redemption Price or the Special Redemption Price,
as the case may be, of all Capital Securities then outstanding, (ii) upon the
distribution of all of the Debentures to the Holders of all of the Capital
Securities or (iii) upon full payment of the amounts payable in accordance with
the Declaration upon dissolution of the Issuer. This Guarantee will continue to
be effective or will be reinstated, as the case may be, if at any time any
Holder of Capital Securities must restore payment of any sums paid under the
Capital Securities or under this Guarantee.

                                  ARTICLE VII

                                 INDEMNIFICATION

SECTION 7.1       EXCULPATION.
                  ------------

     (a) No  Indemnified  Person shall be liable,  responsible or accountable in
damages or otherwise to the Guarantor or any Covered Person for any loss, damage
or claim incurred by reason of any act or omission of such Indemnified Person in
good  faith  in  accordance  with  this  Guarantee  and in a  manner  that  such
Indemnified  Person reasonably  believed to be within the scope of the authority
conferred on such Indemnified Person by this Guarantee or by law, except that an
Indemnified  Person shall be liable for any such loss,  damage or claim incurred
by reason of such  Indemnified  Person's  negligence or willful  misconduct with
respect to such acts or omissions.



     (b) An Indemnified Person shall be fully protected in relying in good faith
upon the  records  of the  Issuer or the  Guarantor  and upon such  information,
opinions,  reports or statements presented to the Issuer or the Guarantor by any
Person as to matters the Indemnified Person reasonably  believes are within such
other Person's  professional  or expert  competence and who, if selected by such
Indemnified  Person,  has been selected with reasonable care by such Indemnified
Person, including information,  opinions,  reports or statements as to the value
and amount of the  assets,  liabilities,  profits,  losses,  or any other  facts
pertinent  to the  existence  and amount of assets from which  Distributions  to
Holders of Capital Securities might properly be paid.

SECTION 7.2       INDEMNIFICATION.
                  ----------------

     (a) The Guarantor agrees to indemnify each  Indemnified  Person for, and to
hold each  Indemnified  Person harmless  against,  any and all loss,  liability,
damage,  claim or expense incurred without  negligence or willful  misconduct on
the part of the  Indemnified  Person,  arising out of or in connection  with the
acceptance or administration of the trust or trusts hereunder, including but not
limited to the costs and expenses (including reasonable legal fees and expenses)
of the Indemnified Person defending itself against, or investigating,  any claim
or  liability  in  connection  with the  exercise or  performance  of any of the
Indemnified Person's powers or duties hereunder.  The obligation to indemnify as
set forth in this Section 7.2 shall  survive the  resignation  or removal of the
Guarantee Trustee and the termination of this Guarantee.

     (b) Promptly after receipt by an Indemnified  Person under this Section 7.2
of notice of the commencement of any action,  such Indemnified Person will, if a
claim in respect  thereof is to be made against the Guarantor under this Section
7.2,  notify  the  Guarantor  in writing of the  commencement  thereof;  but the
failure so to notify the  Guarantor  (i) will not  relieve  the  Guarantor  from
liability  under paragraph (a) above unless and to the extent that the Guarantor
did  not  otherwise  learn  of such  action  and  such  failure  results  in the
forfeiture  by the  Guarantor of  substantial  rights and defenses and (ii) will
not, in any event, relieve the Guarantor from any obligations to any Indemnified
Person  other than the  indemnification  obligation  provided in  paragraph  (a)
above.  The Guarantor  shall be entitled to appoint  counsel of the  Guarantor's
choice at the  Guarantor's  expense to represent the  Indemnified  Person in any
action for which  indemnification  is sought (in which case the Guarantor  shall
not thereafter be responsible for the fees and expenses of any separate  counsel
retained  by the  Indemnified  Person or  Persons  except  as set forth  below);
PROVIDED,  HOWEVER,  that such counsel shall be  satisfactory to the Indemnified
Person. Notwithstanding the Guarantor's election to appoint counsel to represent
the  Indemnified  Person in any action,  the  Indemnified  Person shall have the
right to employ separate counsel  (including  local counsel),  and the Guarantor
shall bear the reasonable fees, costs and expenses of such separate counsel,  if
(i) the use of counsel  chosen by the  Guarantor  to represent  the  Indemnified
Person would  present such counsel with a conflict of interest,  (ii) the actual
or  potential  defendants  in, or targets of, any such action  include  both the
Indemnified  Person and the  Guarantor  and the  Indemnified  Person  shall have
reasonably  concluded  that there may be legal  defenses  available to it and/or
other  Indemnified  Persons  which are  different  from or  additional  to those



available to the Guarantor,  (iii) the Guarantor shall not have employed counsel
satisfactory  to the  Indemnified  Person to represent  the  Indemnified  Person
within a reasonable  time after notice of the institution of such action or (iv)
the Guarantor shall authorize the Indemnified  Person to employ separate counsel
at the  expense of the  Guarantor.  The  Guarantor  will not,  without the prior
written consent of the Indemnified  Persons,  settle or compromise or consent to
the entry of any  judgment  with  respect to any  pending or  threatened  claim,
action,  suit or proceeding in respect of which  indemnification or contribution
may be sought  hereunder  (whether or not the Indemnified  Persons are actual or
potential parties to such claim or action) unless such settlement, compromise or
consent  includes an unconditional  release of each Indemnified  Person from all
liability arising out of such claim, action, suit or proceeding.

SECTION 7.3       COMPENSATION; REIMBURSEMENT OF EXPENSES.
                  ----------------------------------------
                  The Guarantor agrees:

     (a) to pay to the Guarantee Trustee from time to time such compensation for
all services rendered by it hereunder as the parties shall agree to from time to
time (which  compensation shall not be limited by any provision of law in regard
to the compensation of a trustee of an express trust); and

     (b)  except as  otherwise  expressly  provided  herein,  to  reimburse  the
Guarantee  Trustee upon request for all reasonable  expenses,  disbursements and
advances  incurred  or made  by it in  accordance  with  any  provision  of this
Guarantee   (including  the  reasonable   compensation   and  the  expenses  and
disbursements of its agents and counsel), except any such expense,  disbursement
or advance as may be attributable to its negligence or willful misconduct.

                  The provisions of this Section 7.3 shall survive the
resignation or removal of the Guarantee Trustee and the termination of this
Guarantee.

                                  ARTICLE VIII

                                  MISCELLANEOUS

SECTION 8.1       SUCCESSORS AND ASSIGNS.
                  -----------------------

                  All guarantees and agreements contained in this Guarantee
shall bind the successors, assigns, receivers, trustees and representatives of
the Guarantor and shall inure to the benefit of the Holders of the Capital
Securities then outstanding. Except in connection with any merger or
consolidation of the Guarantor with or into another entity or any sale, transfer
or lease of the Guarantor's assets to another entity, in each case to the extent
permitted under the Indenture, the Guarantor may not assign its rights or
delegate its obligations under this Guarantee without the prior approval of the
Holders of not less than a Majority in liquidation amount of the Capital
Securities.



SECTION 8.2       AMENDMENTS.
                  -----------

                  Except with respect to any changes that do not adversely
affect the rights of Holders of the Capital Securities in any material respect
(in which case no consent of Holders will be required), this Guarantee may be
amended only with the prior approval of the Holders of not less than a Majority
in liquidation amount of the Capital Securities. The provisions of the
Declaration with respect to amendments thereof shall apply equally with respect
to amendments of the Guarantee.

SECTION 8.3       NOTICES.
                  -------

                  All notices provided for in this Guarantee shall be in
writing, duly signed by the party giving such notice, and shall be delivered,
telecopied or mailed by first class mail, as follows:

     (a) If given to the Guarantee Trustee,  at the Guarantee  Trustee's mailing
address set forth below (or such other address as the Guarantee Trustee may give
notice of to the Holders of the Capital Securities):

                           Wilmington Trust Company
                           Rodney Square North
                           1100 North Market Street
                           Wilmington, Delaware 19890-0001
                           Attention: Corporate Trust Administration
                           Telecopy: 302-651-8882
                           Telephone:  302-651-1000

     (b) If given to the Guarantor, at the Guarantor's mailing address set forth
below (or such other  address as the Guarantor may give notice of to the Holders
of the Capital Securities and to the Guarantee Trustee):

                           Peoples Bancorp Inc.
                           138 Putnam Street, Marietta, Ohio 45750
                           Attention: John W. Conlon
                           Telecopy: 740-374-6167
                           Telephone: 740-373-3155

     (c) If given to any Holder of the  Capital  Securities,  at the address set
forth on the books and records of the Issuer.

                  All such notices shall be deemed to have been given when
received in person, telecopied with receipt confirmed, or mailed by first class
mail, postage prepaid, except that if a notice or other document is refused
delivery or cannot be delivered because of a changed address of which no notice
was given, such notice or other document shall be deemed to have been delivered
on the date of such refusal or inability to deliver.



SECTION 8.4       BENEFIT.
                  -------

                  This Guarantee is solely for the benefit of the Holders of the
Capital Securities and, subject to Section 2.1(a), is not separately
transferable from the Capital Securities.

SECTION 8.5       GOVERNING LAW.
                  --------------

                  THIS GUARANTEE SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK, WITHOUT REGARD TO CONFLICT OF
LAWS PRINCIPLES THEREOF.

SECTION 8.6       COUNTERPARTS.
                  -------------

                  This Guarantee may contain more than one counterpart of the
signature page and this Guarantee may be executed by the affixing of the
signature of the Guarantor and the Guarantee Trustee to any of such counterpart
signature pages. All of such counterpart signature pages shall be read as though
one, and they shall have the same force and effect as though all of the signers
had signed a single signature page.









                  THIS GUARANTEE is executed as of the day and year first above
written.

                                   PEOPLES BANCORP INC.
                                       as Guarantor


                                   By:/S/ ROBERT E. EVANS
                                          _____________________________________
                                          Robert E. Evans
                                          President and Chief Executive Officer


                                   WILMINGTON TRUST COMPANY,
                                       as Guarantee Trustee


                                   By:/S/ ANITA E. DALLAGO
                                          _____________________________________
                                          Anita E. Dallago
                                          Senior Financial Services Officer