EXHIBIT 23.1



                         Consent of Independent Auditors



We consent to the incorporation by reference in the Registration Statement on
Form S-8 of MainSource Financial Group, Inc. (No. 33-45395) of our report, dated
February 11, 2005, except for Note 2 with respect to the pending acquisition, as
to which the date is March 8, 2005, on the consolidated financial statements of
MainSource Financial Group as of December 31, 2004 and 2003 and for each of the
three years in the period ended December 31, 2004 included in the Annual Report
on Form 10-K.



                                                /s/ Crowe Chizek and Company LLC

March 15, 2005
Indianapolis, Indiana