English Aristocracy. Possibly born in Normandy, France, it is unclear as to whether she was the sister or the daughter of Gerbod the Fleming, Earl of Chester, the hereditary advocate of the Abbey of St. Bertin at St. Omer. She married William I de Warenne, 1st Earl of Surrey. She apparently died in childbirth at Castle Acre, Norfolk, England. Her name has also been recorded as Gundreda.