William married Mathilde D'ANJOU in Jun 1119 in Lisieux. Mathilde (daughter of Foulques V 'the Young" D'ANJOU and Ermengarde DE MAINE) was born about 1107 in Angers, Maine-et-Loire, France; died in 1154 in Fontevrault Abbey, Fontevrault, Maine-Et-Loire, France. [Group Sheet] [Family Chart]