*William III De Warenne
born Abt 1110 Of, Vermandois, Normandy, France
died 1148 Laodicea

father:
*William II De Warenne
born Abt 1065 Of, Sussex, England?
died 11 May 1138 England
buried Priory of Lewes, Lewes, Sussex, England

mother:
*Isabel (Elizabeth) De Vermandois
born Abt 1085 Of, Valois, France
died 13 Feb 1131 England
buried Lewes, Sussex, England
married Bef 1118 France

siblings:
Adelian De Warenne born Abt 1122 Of, Surrey, England
*Ada De Warenne born 1120, Of, Surrey, England died 1178, buried, Kelso
Gundred De Warenne born Abt 1117 Of, Warwick, Warwickshire, England
died Lvg 1166 Warwickshire, England buried Kelso, Roxburgh, Scotland
Reginald De Warenne born Abt 1113 Of, , Vermandois, Normandy, France
Ralph De Warenne born Abt 1115 Of, , Vermandois, Normandy, France

spouse:
*Adelia De Talvas (Talvace)
born Abt 1110 Of, Sussex, England
died 1174

children:
*Isabel De Warenne
born 1137 Surrey, England
died 13 Jul 1199 Lewes, Sussex, England
buried Chapter House, Lewes, Sussex, England

biographical and/or anecdotal:
William de Warren I. was succeeded by his son, William de Warren II., Earl of Warren and Surrey, who married Elizabeth, daughter of the great Earl of Vermandois, the widowed countess of Meulent, by whom he had, among other children, William de Warren III., the last earl of his line, who succeeded him and died in the Holy Land, leaving an only child, Isabel Warren, who inherited his vast domain and through whom the family descended.

notes or source:
LDS