*William I De Warenne
born Abt 1055 Of, Bellencombre, Seine Inferieure, France
died 24 Jun 1088 Penevesy, Lewes, Sussex, England
buried Priory Of Lewes, Lewes, Sussex, England

father:
*Ralph (Raoul or Ranulphe) De Warenne
born Abt 0998 France

mother:
*Emma wife of Ralph De Warenne
born Abt 1020 France
(end of information)

siblings:
*Roger De Mortimer died after 1074 bef 1086
Ralph De Warenne born Abt 1053, France

spouse:
*Gundred Princess of England
born before 1050? Normandy, France
died 27 May 1085 Castle Acre, Acre, Norfolk, England
buried Priory, Lewes, Sussex, England
married Bef 1077 Normandy, France

children:
*William II De Warenne born Abt 1085? Of, Sussex, England
died 11 May 1138 England buried Priory of Lewes, Lewes, Sussex, England
Gundred De Warenne born Abt 1085 Acre Castle, Acre, Norfolk, England
*Reginald De Warenne born Abt 1082 Of, Sussex, England
*Editha De Warenne born Of, Surrey, Sussex, England

biographical and/or anecdotal:
. William de Warren I, Earl of Warenne, came from Normandy, a near kinsman of William the Conqueror. He received large grants of land in recognition of the distinguished part he took at the battle of Hastings. He had large grants of land in several counties among which were the barony of Lewes, in Sussex, and the manors of Carletune and Benington, in Lincolnshire. So extensive indeed were those grants that his possessions resembled more the dominions of a sovereign prince than the estates of a subject. He enjoyed, too, in the highest degree, the confidence of the king, and was appointed joint Justice-General, with Richard de Benefactis, for administering justice throughout the whole realm. While in that office, some great disturbers of the public peace having refused to appear before him and his colleague, in obedience to citation, the Earl took up arms, and defeated the rebels in a battle at Fagadune, when he is said, for the purpose of striking terror, to have cut off the right foot of each of his prisoners. Of these rebels, Ralph Wahir or Gauder, Earl of Norfolk, and Roger, Earl of Hereford, were the ringleaders. He was likewise highly esteemed by King William Rufus, and was created by that monarch the first Earl of Surrey.

notes or source:
LDS & HBJ