EXHIBIT 23.1

                        INDEPENDENT ACCOUNTANTS' CONSENT

We consent to the inclusion in the Proxy Statement-Prospectus forming a part of
the Registration Statement on Form S-4 of Princeton National Bancorp, Inc. of
our report, dated January 27, 2005, relating to the consolidated balance sheets
of Somonauk FSB Bancorp, Inc. and subsidiary as of December 31, 2004 and 2003,
and the related consolidated statements of income, changes in stockholders'
equity, and cash flows for the years ended December 31. 2004, 2003 and 2002, and
to the reference to our Firm under the heading of "Experts" in the Proxy
Statement-Prospectus. Financial statements provided pursuant to Rule 3-05 of
Regulation S-X are not financial statements of issuers. Therefore, an accounting
firm does not need to be registered with the Public Company Accounting Oversight
Board (PCAOB) to audit such financial statements. We are not registered with the
PCAOB.

                                        /s/ Borhart Spellmeyer & Company

Elgin, Illinois
April 25, 2005