Isabeau married Jean de Looz Abt 1268. Jean (son of Arnold de Looz and Jeanne de Chigny) was born Abt 1230; died 19 Jan 1280. [Group Sheet]
Jean married Marguerite de Nesle 1284. Marguerite (daughter of Jean II de Nesle and Jeanne d'Oudenarde) was born 1270; died Aft 1328. [Group Sheet]
Marguerite married Nicolas de Barbançon 22 Mar 1329. Nicolas (son of Nicolas de Barbançon and Alexandrine de Ruès) died Bef 1345. [Group Sheet]
Jeanne — Gérard II d'Enghien. Gérard (son of Gérard d'Enghien and Marie de Rumigny) died Aft 1385. [Group Sheet]