William de Warenne was the 1st Earl of Surrey and Seigneur de Varennes, Seine Maritime. He fought at the Battle of Hastings in 1066. He was mortally wounded at the siege of Pevensey Castle in Sussex in 1088.
"Bellencombre (Loyd, 1 11-12), son of Ralph II de Warenne and Emma. Domesday tenant-in-chief, holding the militarily important rape of Lewes in Sussex, where he founded Cluniac Priory c. 1078/82. He supported William II against Odo" [1]
"de Warenne, Gundreda Uxor Willelmi. Sister of Gerbod the Fleming, advocate of Saint-Bertin and earl of Chester in 1070, and Frederick. Wife of William I de Warenne. She died in childbirth on 27 May 1085 and was buried in lewes priory (Mon. Ang. v, 12) EYC viii, pp. 6-7; A.J. Farrington, 'A note on Gherbod the Fleming, Earl of Chester', Journal of the Chester Archaeological Society li (1964). Clay, Early Yorkshire Charters (1949), VIII, nos 2, 4, 15; Dugdale, Monasticon Anglicanum IV, p. 13, no. IV, pp. 12-13 no. II, p. 14, no. VI" [2]
[1] K. S. B. Keats-Rohan, Domesday People, A Prosopography of persons occurring in English documents, 1066-1166 (Boydell & Brewer Ltd, 1999), 480, [GoogleBooks].
[2] K. S. B. Keats-Rohan, Domesday Descendants, A Prosopography of persons occurring in English documents, 1066-1166: II Pipe Rolls to Cartae Baronum (Boydell Press, 2002), 777.