Exhibit 31.2

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO RULE 13a-14(a) AND RULE 15d-14(a) OF THESECURITIES EXCHANGE ACT OF 1934, AS AMENDED

I, Kim S. Destro, certify that:

| 1.     | I have reviewed this quarterly report on Form 10-QSB of Great Lakes		Bancorp, Inc. (the "Company");                                                                                                                                                                                                                        |
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| 2.     | Based on my knowledge, this quarterly report does not contain any untrue		statement of a material fact or omit to state a material fact necessary		to make the statements made, in light of the circumstances under which		such statements were made, not misleading with respect to the period		covered by this quarterly report;   |
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| 3.     | Based on my knowledge, the consolidated financial statements, and other		financial information included in this quarterly report, fairly present		in all material respects the financial condition, results of operations		and cash flows of the registrant as of, and for, the periods presented		in this quarterly report;         |
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| 4.     | The small business issuer's other certifying officer and I are		responsible for establishing and maintaining disclosure controls and		procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e))		for the small business issuer and have:                                                                                 |
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|   | (a)                                                                                                                                                                                                                                                                                                                                  | designed such disclosure controls and procedures, or caused such		disclosure controls and procedures to be designed under our supervision,		to ensure that material information relating to the small business		issuer, including its consolidated subsidiary, is made known to us by		others within those entities, particularly during the period in which		this quarterly report is being prepared; |
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|   | (b)                                                                                                                                                                                                                                                                                                                                  | evaluated the effectiveness of the small business issuer's disclosure		controls and procedures presented in this report our conclusions about		the effectiveness of the disclosure controls and procedures, as of the		end of the period covered by this report based on such evaluation; and |
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|   | (c)                                                                                                                                                                                                                                                                                                                                  | disclosed in this report any change in the small business issuer's		internal control over financial reporting that occurred during the small		business issuer's most recent fiscal quarter (the small business		issuer's fourth fiscal quarter in the case of an annual report) that has		materially affected, or is reasonably likely to materially affect, the		small business issuer's internal control over financial reporting; and |
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| 5.     | The small business issuer's other certifying officer and I have		disclosed, based on our most recent evaluation of internal control over		financial reporting, to the small business issuer's auditors and the		audit committee of the small business issuer's board of directors (or		persons performing the equivalent functions): |
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|   | (a)                                                                                                                                                                                                                                                                                                                                  | all significant deficiencies and material weaknesses in the design or		operation of internal control over financial reporting which are		reasonable likely to adversely affect the small business issuer's		ability to record, process, summarize and report financial information;		and |
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|   | (b)                                                                                                                                                                                                                                                                                                                                  | any fraud, whether or not material, that involves management or other		employees who have a significant role in the small business issuer's		internal control over financial reporting. |

November 9, 2005

 

/s/ Kim S. Destro                                                       Kim S. DestroExecutive Vice President & Chief Financial Officer