Exhibit 10.1


                                    Agreement

         This Agreement is made by and between the undersigned parties as of
this 31st day of March, 2005.

     A.  WHEREAS, JG Trident II, LLC ("Greenberg LLC"), of which Jeffrey W.
         Greenberg ("Greenberg") is the sole member, was a general partner of
         Trident Capital II, L.P. ("Trident II") and Greenberg was a limited
         partner of Trident II;

     B.  WHEREAS, the terms and conditions of Trident II are contained in the
         Trident Capital II, L.P. Amended and Restated Limited Partnership
         Agreement dated December 2, 1999 (the "Trident II Limited Partnership
         Agreement");

     C.  WHEREAS, Greenberg's employment with Marsh & McLennan Companies, Inc.
         ("MMC") terminated on October 25, 2004;

     D.  WHEREAS, Greenberg and MMC entered into an Agreement dated November 9,
         2004 (the "Standstill Agreement") providing, in part, that "[i]f we do
         not otherwise reach agreement as to the characterization of the
         termination of Mr. Greenberg's employment and his rights under MMC's
         compensation programs and any plan, program or agreement maintained by
         any of MMC's subsidiaries or affiliates, we have agreed that both
         parties will be free to maintain their respective positions with regard
         to Mr. Greenberg's termination";

     E.  WHEREAS, by letter dated January 26, 2005 (the "January 26 Letter"),
         Greenberg stated that "the undersigned, JG Trident II, LLC and Jeffrey
         W. Greenberg, hereby voluntarily terminate their status as a Partner"
         of Trident II;

     F.  WHEREAS, by letter dated February 15, 2005 (the "February 15 Letter"),
         John Siffert, counsel for the MMC outside directors, wrote to Richard
         I. Beattie, Esq., counsel for Greenberg, confirming receipt of the
         January 26 letter and further stating that "[t]his letter will also
         confirm our mutual understanding that Greenberg's resignation from
         Trident Capital II, L.P. does not affect the Standstill Agreement
         between Greenberg and Marsh dated November 9, 2004, which remains in
         effect in accordance with its terms";

     G.  WHEREAS, MMC proposes to enter into certain transactions (the "Proposed
         Transactions"), one of which would have the effect of converting its
         indirect subsidiary Marsh & McLennan GP I, Inc. ("GP I") from a general
         partner to a limited partner in Trident II;

     H.  WHEREAS, the parties hereto wish to allow the Proposed Transactions to
         be consummated without prejudicing or diminishing the rights of either
         party with regard to the characterization and consequence of the
         termination of the partnership interests in Trident II of Greenberg LLC
         and Greenberg (the "Greenberg Partnership Interests") as contemplated
         in the Standstill Agreement;





         NOW, THEREFORE, in consideration of the mutual agreements herein and
other consideration, the receipt and sufficiency of which are conclusively
acknowledged, the undersigned parties agree as follows:

     1.  The characterization of Greenberg's termination of the Greenberg's
         Partnership Interests as being a "voluntary termination" in accordance
         with Section 9.1(a)(iii) of the Trident II Limited Partnership
         Agreement or an "involuntary termination (either with or without
         "Cause") in accordance with Section 9.1(a)(ii)(A) of the Trident II
         Limited Partnership Agreement shall not be determined until the
         characterization of the termination of Greenberg's employment with MMC
         is finally determined, either through agreement or through judicial
         process.

     2.  Neither the conversion of GP I from a general to a limited partner of
         Trident II nor any other aspect of the Proposed Transactions will
         foreclose or otherwise prejudice the right of any party to take any
         position with regard to the proper characterization and the
         consequences of the termination of the Greenberg Partnership Interests.
         In particular, notwithstanding such conversion and the other aspects of
         the Proposed Transactions, (a) Greenberg and Greenberg LLC will retain
         the right to argue that the termination of the Greenberg Partnership
         Interests was a voluntary termination under Section 9.1(a)(iii) of the
         Trident II Limited Partnership Agreement, and (b) MMC and its
         affiliates and subsidiaries will retain the right to argue that the
         Greenberg Partnership Interests were involuntarily terminated by GP I
         for Cause under Section 9.1(a)(ii)(A) of the Trident II Limited
         Partnership Agreement.

     3.  The interpretation and enforcement of this Agreement shall be governed
         by the substantive law of New York, without regard to conflicts-of-law
         principles.

AGREED TO:

Marsh & McLennan Companies, Inc.                    JG Trident II, LLC


By /s/ Lewis W. Bernard                             By /s/ Jeffrey W. Greenberg
   -------------------------                           -------------------------
   Lewis Bernard                                       Jeffrey W. Greenberg

   /s/ Jeffrey W. Greenberg
   -------------------------
   Jeffrey W. Greenberg
   (in his personal capacity)


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