Exhibit 23(a)


                         CONSENT OF INDEPENDENT AUDITORS


We consent to the incorporation by reference in the Registration Statement (Form
S-8 No. 333- 64314)  dated July 2, 2001,  pertaining  to 1st Source  Corporation
Employees'  Profit Sharing Plan and Trust, the Registration  Statement (Form S-8
No.  333-64306)  dated July 2, 2001,  pertaining to Trustcorp  Mortgage  Company
Employee  Retirement  Savings Plan,  the  Registration  Statement  (Form S-8 No.
333-64304) dated July 2, 2001,  pertaining to 1st Source  Corporation 2001 Stock
Option Plan, the Registration Statement (Form S-8 No. 333-26243) dated April 30,
1997,  pertaining to 1st Source  Corporation  1997 Employee Stock Purchase Plan,
the  Registration  Statement  (Form  S-8 No.  33-81852)  dated  July  22,  1994,
pertaining  to  1st  Source   Corporation   1992  Stock  Option  Plan,  and  the
Registration  Statement  (Form  S-8  No.  33-8840)  dated  September  16,  1986,
pertaining to 1st Source Corporation Employees' Profit Sharing Plan and Trust of
our report dated January 14, 2002,  with respect to the  consolidated  financial
statements of 1st Source  Corporation  incorporated  by reference in this Annual
Report on Form 10-K for the year ended December 31, 2001.





                                                           /s/ ERNST & YOUNG LLP



Columbus, Ohio
March 12, 2002

                                      E-7