By Gundred Surrey had:
William de Warenne, 2nd Earl of Surrey (d. 1138), who married Elisabeth (Isabelle) de Vermandois, widow of Robert de Beaumont, 1st Earl of Leicester.
Edith de Warenne, who married firstly Gerard de Gournay, lord of Gournay-en-Bray, and secondly Drew de Monchy.
Reynold de Warenne, who inherited lands from his mother in Flanders and died c. 1106–08.
An unnamed daughter, who married Ernise de Coulonces.