Fisker 10-Q 2008 Q2 Quarterly report

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Section 1350 Certification

In connection with the Quarterly Report of Flagstone Reinsurance Holdings Limited (the “Company”) on Form 10-Q for the period ended June 30, 2008, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David Brown, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted by § 906 of the Sarbanes-Oxley Act of 2002, that, based on my knowledge:

(1)  The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Date:  August 5, 2008

/s/ David Brown

David Brown

Chief Executive Officer