EX-24 9 dex24.txt POWERS OF ATTORNEY Exhibit 24 DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Richard A. Abdoo --------------------------------------- Richard A. Abdoo DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ David Andreas ------------------------------------- David Andreas DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Oscar C. Boldt -------------------------------------- Oscar C. Boldt DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Wendell F. Bueche --------------------------------------- Wendell F. Bueche DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Jon F. Chait -------------------------------------- Jon F. Chait DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Timothy E. Hoeksema --------------------------------------- Timothy E. Hoeksema DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Bruce E. Jacobs --------------------------------------- Bruce E. Jacobs DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Burleigh E. Jacobs -------------------------------------- Burleigh E. Jacobs DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Donald R. Johnson ----------------------------------------- Donald R. Johnson DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Ted D. Kellner ---------------------------------------- Ted D. Kellner DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ James F. Kress ----------------------------------------- James F. Kress DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ D.J. Kuester ---------------------------------------------- D.J. Kuester DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Katharine C. Lyall ---------------------------------------- Katharine C. Lyall DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Edward L. Meyer, Jr. ---------------------------------------- Edward L. Meyer, Jr. DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ San W. Orr, Jr. ------------------------------------------ San W. Orr, Jr. DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Peter M. Platten, III ------------------------------------------- Peter M. Platten, III DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ Robert A. Schaefer ------------------------------------------- Robert A. Schaefer DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ John S. Shiely ---------------------------------------- John S. Shiely DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ James A. Urdan ------------------------------------------ James A. Urdan DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ George E. Wardeberg ------------------------------------------ George E. Wardeberg DIRECTOR'S POWER OF ATTORNEY (Form S-4 Relating to the Proposed Merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation) The undersigned director of Marshall & Ilsley Corporation designates each of J.B. Wigdale, M.F. Furlong, and M.A. Hatfield, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation's Registration Statement on Form S-4 relating to the proposed merger of Century Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended). The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney. Dated this 20th day of December, 2001. /s/ J.B. Wigdale ---------------------------------------- J.B. Wigdale