EXHIBIT 32.2

           CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED
           PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of 1st Source  Corporation  (1st Source) on
Form 10-K for the  fiscal  year  ended  December  31,  2004,  as filed  with the
Securities and Exchange  Commission on the date hereof (the "Report"),  I, Larry
E.  Lentych,  Chief  Financial  Officer of 1st Source,  certify,  pursuant to 18
U.S.C.  Section 1350, as adopted  pursuant to Section 906 of the  Sarbanes-Oxley
Act of 2002,  that to my  knowledge:

     (1)  The Report fully complies with the  requirements  of sections 13(a) or
          15(d) of the Securities and Exchange Act of 1934; and

     (2)  The  information  contained  in the  Report  fairly  presents,  in all
          material respects,  the financial  condition and results of operations
          of 1st Source.

Date: March 16, 2005

By       /s/ LARRY E. LENTYCH
         --------------------
         Larry E. Lentych,
         Chief Financial Officer