Petaquilla Minerals (PTQ) 6-K Report of Foreign Private Issuer for the Month of August 2011

Exhibit 99.4

CERTIFICATE

TO:	Ontario Securities Commission
	British Columbia Securities Commission

Pursuant to subsection 2.20(c) of National Instrument 54-101 –Communication with Beneficial Owners of Securities of a Reporting Issuer("NI 54-101"), and in connection with the special meeting of shareholders of Petaquilla Minerals Ltd. (the "Company") to be held on August 31, 2011 (the "Meeting"), the undersigned hereby certifies for and on behalf of the Company (and not in a personal capacity) that the Company:

(a)	has arranged to have proxy-related materials for the Meeting sent in compliance with NI 54-101 to all beneficial owners at least 21 days before the date fixed for the Meeting;
(b)	has arranged to have carried out all of the requirements of NI 54-101 in addition to those described in subparagraph (a); and
(c)	is relying upon section 2.20 of NI 54-101 in connection with the abridgement of certain of the time periods specified in NI 54-101 in respect of the Meeting.

Dated as of this 3rd day of August, 2011.

PETAQUILLA MINERALS LTD.
Per:	/s/ Joao C. Manuel
	Name: João C. Manuel
	Title: Chief Executive Officer