POWER OF ATTORNEY
            (City National Corporation - Securities Trade Reporting)

     Know all by these presents, that the undersigned hereby constitutes and
appoints each of Michael Cahill, Corinna Cherian, and Jane Gately, 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 City National
Corporation and/or its subsidiaries (the "Company"), Forms 144, 3, 4, and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder, the Form ID required to apply for EDGAR access codes, and any
other documents necessary to facilitate the filing of Section 16 reports and
related EDGAR filings;

          (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 144, 3, 4, or 5, complete and execute any amendment or amendments
thereto, the Form ID required to apply for the EDGAR access codes and timely
file such forms 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 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 144, 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 21st day of March, 2013.

                                      By:  /s/ Peter M. Thomas
                                             Peter M. Thomas