Mahaut married Raoul de Créquy Abt 1140. Raoul (son of Gérard de Créquy and Yolande de Hainaut) was born Abt 1125; died 1181. [Group Sheet]
Baudouin married Clémence d'Aire Abt 1160. Clémence was born Abt 1140. [Group Sheet]
Baudouin married Marguerite de Saint-Omer Abt 1200. Marguerite (daughter of Guillaume de Saint-Omer and Ide d'Avesnes) was born Abt 1175. [Group Sheet]
Philippe married Alix de Picquigny 1224. Alix (daughter of Enguerrand de Picquigny and Marguerite de Ponthieu) was born Abt 1205; died 1268, Mantes, Yvelines, ÃŽle-de-France (Seine), France. [Group Sheet]