POWER OF ATTORNEY

Know  all by these presents that the undersigned hereby constitutes and appoints
each   of   James  M.  Anderson,  and  Denise  R.  Manus,  signing  singly,  the
undersigned's true and lawful attorney-in-fact to:

      (1)   Execute  for  and on behalf of the undersigned, in the undersigned's
            capacity  as  an  officer  and/or  director  of MainSource Financial
            Group, Inc. (the "Company") or as a stockholder of the Company or as
            a  trustee  of  a  stockholder  of the Company, Forms 3, 4, and 5 in
            accordance with Section 16(a) of the Securities Exchange Act of 1934
            and the rules thereunder;

      (2)   Do and perform any and all acts for and on behalf of the undersigned
            which may be necessary or desirable to complete and execute any such
            Form  3,  4,  or 5, complete and execute any amendment or amendments
            thereto, and timely file such form with the United States Securities
            and Exchange Commission and any stock exchange or similar authority;
            and

      (3)   Take  any other action of any type whatsoever in connection with the
            foregoing  which, in the opinion of such attorney-in-fact, may be of
            benefit  to,  in  the  best interest of, or legally required by, the
            undersigned, it being understood that the documents executed by such
            attorney-in-fact on behalf of the undersigned pursuant to this Power
            of  Attorney  shall be in such form and shall contain such terms and
            conditions   as   such   attorney-in-fact   may   approve   in  such
            attorney-in-fact's discretion.

The  undersigned  hereby  grants  to  each  such attorney-in-fact full power and
authority  to  do  and perform any and every act and thing whatsoever requisite,
necessary,  or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could  do  if personally present, with full power of substitution or revocation,
hereby  ratifying  and  confirming  all  that  such  attorney-in-fact,  or  such
attorney-in-fact's  substitute  or substitutes, shall lawfully do or cause to be
done  by  virtue  of  this  Power  of  Attorney and the rights and powers herein
granted.  The  undersigned acknowledges that the foregoing attorneys-in-fact, in
serving  in  such  capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with, or liabilities that may arise under, Section 16 of the Securities Exchange
Act of 1934.

This  Power  of  Attorney  shall  remain  in  full  force  and  effect until the
undersigned  is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's  holdings of and transactions in securities issued by the Company,
unless  earlier  revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

IN  WITNESS  WHEREOF,  the  undersigned  has caused this Power of Attorney to be
executed as of this 18th day of February, 2016.

Signature: /s/ Vince Berta
           ------------------------
            Vince Berta