Guillaume married Eustachie de Baudement Abt 1105. Eustachie (daughter of André de Baudement and Agnès de Braine) was born Abt 1090; died 1166. [Group Sheet]
Guillaume married Agnès de Crépy Abt 1125. Agnès (daughter of Thibaud de Crépy and Élisabeth de Châtillon) was born Abt 1105. [Group Sheet]
Guillaume married Idoine de Trie Abt 1150. Idoine (daughter of Guillaume Aiguillon de Trie and Marguerite de Gisors) was born Abt 1130; died Abt 1208. [Group Sheet]
Mathilde married Mathieu de Montmorency Abt 1170. Mathieu (son of Mathieu de Montmorency and Alice d'Angleterre) was born Abt 1135; died 1204, Constantinople (Istanbul), Empire Byzantin. [Group Sheet]
Guillaume married Alix de Châtillon 1193. Alix (daughter of Guy II de Châtillon and Adélaïde de Dreux) was born Abt 1163. [Group Sheet]