POWER OF ATTORNEY
      Known all men by these presents, that the undersigned does
hereby constitute and appoint Anthony J. Restel, M. Scott Price and
Michelle L. Vallot, jointly and each of them severally, the
undersigned's true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for the undersigned and in
the undersigned's name, place and stead, in any and all capacities,
to:
(1)	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of
IBERIABANK Corporation (the "Corporation"), Forms 3, 4 and
5, and any and all amendments thereto, in accordance with
Section 16(a) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and the rules thereunder;
(2)	do and perform any and all acts on behalf of the
undersigned which may be necessary or desirable to complete
and execute any such Forms 3, 4 or 5, or an amendment
thereto, and timely file such form with the 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 being 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, 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 Corporation assuming, any of the undersigned's
responsibilities to comply with Section 16 of the Exchange Act. 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 Corporation, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-
in-fact.
      IN WITNESS WHEREOF, the undersigned has executed this Power of
Attorney as of this 27th day of January, 2020.

/s/Ernest P. Breaux Jr.
Signature


Ernest P. Breaux Jr.
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