Gundred of St. Omer??

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Children of William and Gundred
• William de Warenne, 2nd Earl of Surrey (d. 1138) married Elisabeth (Isabelle) de Vermandois, widow of Robert de Beaumont, 2nd Earl of Leicester
• Edith de Warenne who married 1) Gerard de Gournay and 2) Drogon (Dreux), Lord of Moncy. [8]
• Reynold de Warenne, who inherited lands from his mother in Flanders and died before 1118
• an unnamed daughter who married Ernise de Coulonces [9]
• Gundred?

WARENNE or WARREN, WILLIAM, first EARL of SURREY (d. 1088), appears to have been the son of Rodulf or Ralph, called 'filius episcopi,' by his second wife, Emma, Rodulf himself being the son of Hugh (d. 1020), bishop of Coutances, by a sister of Gunnor, wife of Richard I (d. 996), duke of the Normans (G. Waters, Gundrada de Warenne, p. II; Archøological Journal, iii. 7; Cont. of Will. Jumièges, viii.37, makes his mother a niece of Gunnor). His name was derived from his fortress situated on the left bank of the Varenne, and called after that river, though later called Bellencombre (Seine-lnférieure), where there are some ruins of a castle of the eleventh century. He was a knight at the battle of Mortemer in 1054; and when, after the battle, Roger de Mortemer, his kinsman (he is incorrectly called his brother, ib.; Stapleton says that he was uncle), offended Duke William, the duke gave the castle of Mortemer to William Warenne
(Orderic, p. 658).

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Children of William and Gundred
• William de Warenne, 2nd Earl of Surrey (d. 1138) married Elisabeth (Isabelle) de Vermandois, widow of Robert de Beaumont, 2nd Earl of Leicester
• Edith de Warenne who married 1) Gerard de Gournay and 2) Drogon (Dreux), Lord of Moncy. [8]
• Reynold de Warenne, who inherited lands from his mother in Flanders and died before 1118
• an unnamed daughter who married Ernise de Coulonces [9]
• Gundred?