Exhibit 31.1
 LEGACY BANCORP, INC.
CERTIFICATION
Pursuant to Rule 13a-14(a) / 15d-14(a)
  1.
    
    I have reviewed this annual report on Form 10-K/A of Legacy Bancorp, Inc.;2.
    
    Based on my knowledge, this 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 report;3.
    
    Based on my knowledge, the financial statements, and other financial information included in
this 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
report;4.
    
    The registrant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)) and internal control over financial reporting (as defined
in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
 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 registrant,
including its consolidated subsidiaries, is
made known to us by others within those
entities, particularly during the period in
which this report is being prepared;b)
    
    Designed such internal control over financial
reporting, or caused such internal control
over financial reporting to be designed under
our supervision, to provide reasonable
assurance regarding the reliability of
financial reporting and the preparation of
financial statements for external purposes in
accordance with generally accepted accounting
principles;c)
    
    Evaluated the effectiveness of the
registrants disclosure controls and
procedures and 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; andd)
    
    Disclosed in this report any change in the
registrants internal control over financial
reporting that occurred during the
registrants most recent fiscal quarter (the
registrants fourth fiscal quarter in the case
of an annual report) that has materially
affected, or is reasonably likely to
materially affect, the registrants internal
control over financial reporting; and
 5.
    
    The registrants other certifying officer and I have disclosed, based on our most recent
evaluation of internal control over financial reporting, to the registrants auditors and the
audit committee of the registrants board of directors (or persons performing the equivalent
function):
 a)
    
    All significant deficiencies and material
weaknesses in the design or operation of
internal control over financial reporting
which are reasonably likely to adversely
affect the registrants ability to record,
process, summarize and report financial
information; andb)
    
    Any fraud, whether or not material, that
involves management or other employees who
have a significant role in the registrants
internal control over financial reporting.
 Date: April 29, 2011
    /s/ J. Williar DunlaevyJ. Williar DunlaevyChief Executive Officer and
Chairman of the Board