EXHIBIT 10.a
                         Washington Trust Bancorp, Inc.
                            NONCOMPETITION AGREEMENT

               This  Noncompetition  Agreement  (the  "Agreement")  is made  and
          entered into as of April 16,  2002,  by and between  Washington  Trust
          Bancorp,  Inc.  (the  "Company")  and  Patrick J.  Shanahan,  Jr. (the
          "Executive").

                                   WITNESSETH:

               WHEREAS,  the Company and First Financial  Corp.,  (the "Seller")
          have entered into an Agreement and Plan of Merger dated as of November
          12, 2001 (the "Merger Agreement")  pursuant to which Seller will merge
          with and into Buyer (the "Merger");

               WHEREAS, the Executive is currently the Chairman, Chief Executive
          Officer and President of the Seller and the parties  acknowledge  that
          the  Executive  has  considerable  knowledge,  business  contacts  and
          expertise  relating to the business of the Company,  which  knowledge,
          contacts and expertise,  if used in competition with the Company would
          substantially  harm  the  business  and  financial  prospects  of  the
          Company;

               WHEREAS, the execution of this Agreement is a condition precedent
          to the Company's obligations to consummate the Merger

               NOW,  THEREFORE,  in  consideration  of the mutual  covenants set
          forth herein and other good valuable consideration, the parties hereto
          agree as follows:

1.     Agreement Consideration

               In  consideration   for  execution  of  this  Agreement  and  the
          Executive's  performance  of the covenants of the Executive  contained
          herein, the Company agrees to pay to the Executive  $840,000.00 within
          two (2) business  days  following  consummation  of the Merger.  It is
          understood  and  agreed  that  the  execution  and  delivery  of  this
          Agreement by the Executive is a material inducement to the willingness
          of the Company to enter into the Merger  Agreement  and to  consummate
          the transactions contemplated thereby.

2.     Non-Compete

               The Executive agrees that during the three-year  period following
          consummation  of the  Merger,  the  Executive  will not,  directly  or
          indirectly,  (i)  become a  director,  officer,  employee,  principal,
          agent,  consultant or independent contractor of any insured depository
          institution,  trust  company  or parent  holding  company  of any such
          institution   or  company   which  has  an  office  in  Rhode  Island,
          Massachusetts  or  Connecticut  (a  "Competing  Business");  provided,
          however,  that this  provision  shall not prohibit the Executive  from
          owning bonds,  non-voting preferred stock or up to two percent (2%) of
          the  outstanding  common stock of any such entity if such common stock
          is publicly traded;  provided,  further,  however, that this provision
          shall not prohibit the Executive  from owning the common stock or from
          serving as a director of the Company or any of its subsidiaries,  (ii)
          solicit or induce, or cause others to solicit or induce,  any employee
          of the Company or any of its  subsidiaries  to leave the employment of
          such entities or (iii) solicit (whether by mail,  telephone,  personal
          meeting or any other  means) any customer of the Company or any of its
          subsidiaries  to  transact  banking  business  with any other  entity,
          whether or not a  Competing  Business,  or to reduce or  refrain  from
          doing any banking  business with the Company or its  subsidiaries,  or
          interfere  with or damage (or attempt to interfere with or damage) any
          banking  relationship  between the Company or its subsidiaries and any
          such customers.

3.     Confidentiality

               Except  as  required  by law  or  regulation  (including  without
          limitation in connection with any judicial or  administrative  process
          or proceeding),  the Executive shall keep secret and  confidential and
          shall not  disclose to any third party  (other than the Company or its
          subsidiaries)  in  any  fashion  or for  any  purpose  whatsoever  any
          information  regarding the Company,  Seller or any of their respective
          subsidiaries, which is not available to the general public to which he
          had access at any time during the course of his  employment  by Seller
          or  its   subsidiaries,   including  without   limitation,   any  such
          information  relating to: business or operations,  plans,  strategies,
          prospects   or   objectives;   products,   technology,   processes  or
          specifications;   research  and  development,   operations  or  plans;
          customers and customer lists;  distribution,  sales, service,  support
          and marketing practices and operations;  financial condition,  results
          of operations and prospects; operational strengths and weaknesses; and
          personnel and compensation policies and procedures.

4.     Injunctive Relief; Remedies

               The Executive  agrees that damages at law will be an insufficient
          remedy to the Company in the event that the Executive  violates any of
          the  provisions of Sections 2 or 3, and that the Company may apply for
          and, upon the requisite  showing,  have injunctive relief in any court
          of  competent  jurisdiction  to restrain the breach of  threatened  or
          attempted  breach of or otherwise to  specifically  enforce any of the
          covenants  contained in Section 2 or 3. The Executive also agrees that
          such remedies shall be in addition to any and all remedies,  including
          damages,  available  to the  Company  against the  Executive  for such
          breaches or threatened or attempted breaches.

5.     Release

               (a) For, and in  consideration  of the commitments made herein by
          the Company, the Executive,  for himself and for his heirs, successors
          and assigns,  does hereby release completely and forever discharge the
          Company  and its  subsidiaries,  affiliates,  stockholders,  attorneys
          officers, directors, agents and employees, successors and assigns, and
          any other party associated with the Company (the "Released  Parties"),
          to the fullest  extent  permitted by applicable  law, from any and all
          claims, rights, demands, actions, liabilities,  obligations, causes of
          action of any and all kind, nature and character  whatsoever,  know or
          unknown,  in any way connected with his employment by Seller or any of
          its subsidiaries  (including in each case predecessors thereof) either
          as a  director,  officer  or  employee,  or  in  connection  with  the
          termination of such  employment.  Notwithstanding  the foregoing,  the
          Executive  does not release the Company  from any  obligations  of the
          Company,  Seller  or  any  of  their  respective  subsidiaries  to the
          Executive   under  (i)  any  employee   benefit  plan,   agreement  or
          arrangement  of  Seller  or the  Company  or any of  their  respective
          subsidiaries,  whether or not referred to in this Agreement,  pursuant
          to which the  Executive is entitled to any benefits or payments,  (ii)
          the Merger Agreement and (iii) this Agreement.

               (b) For and in  consideration  of the commitments  made herein by
          the Executive,  including without limitation the releases in paragraph
          (a) above, the Company, for itself, and for its successors and assigns
          does hereby release completely and forever discharge the Executive and
          his heirs,  successors and assigns, to the fullest extent permitted by
          applicable  law, from any and all claims,  rights,  demands,  actions,
          liabilities, obligations, causes of action of any and all kind, nature
          and character whatsoever,  known or unknown, in any way connected with
          the  Executive's  employment  by  Seller  or any  of its  subsidiaries
          (including  predecessors  thereof),  either as a director,  officer or
          employee.  Notwithstanding  anything in the foregoing to the contrary,
          the Company does not release the Executive  from claims arising out of
          any  breach  by the  Executive  of (i)  any law or  regulation  by the
          Executive  during the term of and related to his  employment by Seller
          or any of its subsidiaries (including predecessors thereof), either as
          a director, officer or employee, or (ii) this Agreement.

6.     No Disparagement

               The Executive  agrees that he shall not,  directly or indirectly,
          make any statement  (whether  orally,  in writing or through any other
          media),  or take any other  action,  if such  statement,  or action is
          intended or could reasonably be expected to disparage the Company,  or
          any of  its  affiliates  or to  adversely  affect  the  reputation  or
          business or credit standing of the Company or any of its affiliates.

7.     Representations and Warranties

               The Company and the Executive represent and warrant to each other
          that they  have  carefully  read this  Agreement  and  consulted  with
          respect  thereto with their  respective  counsel and that each of them
          fully  understands the content of this Agreement and its legal effect.
          Each party hereto also  represents and warrants that this Agreement is
          a  legal,  valid  and  binding  obligation  of  such  party  which  is
          enforceable against it in accordance with its terms.

8.     Successors and Assigns

               This  Agreement  will inure to the benefit of and be binding upon
          the  Executive  and his heirs,  successors  and assigns,  and upon the
          Company,   including  any  successor  to  the  Company  by  merger  or
          consolidation  or any other change in form or any other person or firm
          or  corporation  to which all or  substantially  all of the assets and
          business  of the Company may be sold or  otherwise  transferred.  This
          Agreement may not be assigned by any party hereto  without the consent
          of the other party.

9.     Notices

               All  notices  and  other  communications  hereunder  shall  be in
          writing and shall be deemed given if delivered personally,  telecopied
          (with  confirmation),   or  delivered  by  an  express  courier  (with
          confirmation)  to the parties at the  following  addresses (or at such
          other address for a party as shall be specified by like notice):


         if to the Company, to:
                           Washington Trust Bancorp, Inc.
                           23 Broad Street
                           Westerly, RI  02891
                           Attn:  John F. Treanor, President
                                  and John C. Warren, Chief Executive Officer

         with copies to:

                           Goodwin Procter LLP
                           Exchange Place
                           Boston, MA  02109-2881
                           Attn:  Paul W. Lee, P.C.
                                  and John T. Haggerty, Esq.
         and

         if to the Executive, to

                           Patrick J. Shanahan, Jr.
                           10 Celestia Court
                           North Kingstown, RI  02903

         with a copy to:

                           Bingham Dana LLP
                           150 Federal Street
                           Boston, MA  02110
                           Attn:  Neal J. Curtin, Esq.
                                  and Stephen H. Faberman, Esq.

10.    Withholding

               The Company may  withhold  from any  amounts  payable  under this
          Agreement  such  Federal,  state,  local or foreign  taxes as shall be
          required to be withheld pursuant to any applicable law or regulation.

11.    Entire Agreement; Severability

               (a) This Agreement  incorporates the entire understanding between
          the parties  relating to the subject matter  hereof,  recites the sole
          consideration  for the promises  exchanged and  supersedes any and all
          prior agreements,  both written and oral,  between the Company and the
          Executive or the Seller and the Executive, in either case with respect
          to the subject hereof. In reaching this Agreement, no party has relied
          upon any representation or promise except those set forth herein.

               (b) Any term or provision of this  Agreement  which is invalid or
          unenforceable in any jurisdiction  shall, as to that jurisdiction,  be
          ineffective  to the  extent  of such  invalidity  or  unenforceability
          without  rendering  invalid or  unenforceable  the remaining terms and
          provisions   of  this   Agreement   or   affecting   the  validity  or
          enforceability of any of the terms and provisions of this Agreement in
          any other jurisdiction. If any provision of this Agreement is so broad
          as to be unenforceable,  the provision shall be interpreted to be only
          so broad as is enforceable.  In all such cases,  the parties shall use
          their  reasonable  best  efforts  to  substitute  a valid,  legal  and
          enforceable  provision which,  insofar as practicable,  implements the
          original purposes and intents of this Agreement.

12.    Waiver

               Failure to insist upon strict  compliance  with any of the terms,
          covenants  or  conditions  hereof shall not be deemed a waiver of such
          term,  covenant  or  condition.  A  waiver  of any  provision  of this
          Agreement  must be made in writing,  designated as a waiver and signed
          by the party  against whom its  enforcement  is sought.  Any waiver or
          relinquishment  of any  right  or power  hereunder  at any one or more
          times shall not be deemed a waiver or  relinquishment of such right or
          power at any other time or times.

13.    Counterparts

               This  Agreement  may be  executed in  counterparts,  all of which
          shall  be  considered  one and the same  agreement  and  shall  become
          effective  when  counterparts  have been signed by each of the parties
          and  delivered  to the other  parties,  it being  understood  that all
          parties need not sign the same counterpart.

14.    Governing Law

               This Agreement shall be governed by and construed and enforced in
          accordance  with the laws of the State of Rhode Island  applicable  to
          agreements made and entirely to be performed within the jurisdiction.

15.    Headings

               The headings of sections in this Agreement are for convenience of
          reference  only and are not  intended  to qualify  the  meaning of any
          section. Any reference to a section number shall refer to a section of
          this Agreement, unless otherwise stated.

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               IN WITNESS  WHEREOF,  the Company and the  Executive  have caused
          this Agreement to be executed as of the date first above written.

                                     WASHINGTON TRUST BANCORP, INC.


                                     John C. Warren
                                     ___________________________________________
                                     By: John C. Warren
                                     Title: Chairman and Chief Executive Officer


                                     EXECUTIVE:

                                     Patrick J. Shanahan Jr.
                                     ___________________________________________
                                     Patrick J. Shanahan, Jr.