(Washington, DC) -- Former Vice President Dick Cheney's gay daughter is a mommy twice over.

Mary Cheney gave birth to a six-pound-14-ounce baby girl Wednesday morning at Washington, DC's Sibley Hospital.

The newborn, named Sarah Lynne Cheney, is the second child for the 40-year-old Cheney and her longtime partner, 48-year-old Heather Poe.

The couple welcomed Samuel David Cheney into the world back in 2007.

His birth sent shock waves through the Republican party and rekindled the debate over gay marriage.

Cheney is the birth mother for both children.

The couple has not revealed who is the biological father of either child.

　

(Copyright 2009 by VERTEXNews/Newsroom Solutions)