EXHIBIT 99.1



                            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  Quarterly  Report  of  1st  Source  Corporation  (the
"Company") on Form 10-Q for the  quarterly  period ended June 30, 2002, as filed
with the Securities and Exchange  Commission on the date hereof (the  "Report"),
I, Christopher J. Murphy III, Chief Executive  Officer of the Company,  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 the Company.


By:    /s/ Christopher J. Murphy III
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Christopher J. Murphy III
Chief Executive Officer
August 13, 2002
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