<DOCUMENT>
<TYPE>EX-32
<SEQUENCE>4
<FILENAME>ceo_321.txt
<DESCRIPTION>CFO 32.1
<TEXT>
                                                                    EXHIBIT 32.1


                            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 (1st
Source) on Form 10-Q for the quarterly period ended June 30, 2006, 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 1st Source.



By:


/s/CHRISTOPHER J. MURPHY III
----------------------------
Christopher J. Murphy III
Chief Executive Officer
July 27, 2006
</TEXT>
</DOCUMENT>
