Guillaume married Béatrice d'Hébuterne Abt 1248. Béatrice (daughter of Robert d'Hébuterne) died Aft 1255. [Group Sheet]
Guillaume married Jeanne de Nesle Abt 1270. Jeanne (daughter of Jean de Nesle and Jeanne de Dammartin) was born Aft 1252; died 29 Oct 1280; was buried , Abbaye de Dunes (Furnes), Flandre, Belgique. [Group Sheet]
Guillaume married Marie de Roye Abt 1315. Marie (daughter of Mathieu de Roye and Jeanne de Vendeuil) was born 1295. [Group Sheet]
Jean married Jeanne de Coucy 1351. Jeanne (daughter of Enguerrand de Coucy and Marie de Vianden) was born Abt 1325; died 1363; was buried , Abbaye d'Orcamp (diocèse de Noyon), Picardie, France. [Group Sheet]