Exhibit 23(b)






                          INDEPENDENT AUDITOR'S CONSENT


We consent to the use in this Registration Statement of Marshall & Ilsley
Corporation on Form S-4 of our report, dated February 23, 2001, which is part of
this Registration Statement.

We also consent to the reference to our Firm under the caption "Experts" in such
Registration Statement.

/s/ McGladrey & Pullen, LLP

McGLADREY & PULLEN, LLP

Minneapolis, Minnesota
January 14, 2002