Guillaume married Léonore Crespin Abt 1265. Léonore was born Abt 1240. [Group Sheet]
Marguerite married Jean de Créquy Abt 1300. Jean (son of Baudouin de Créquy and Aélis de Heilly) was born Abt 1260; died Aft 1310. [Group Sheet]
Jean married Jeanne de Picquigny Abt 1335. Jeanne (daughter of Jean II de Picquigny and Marthe d'Amiens) was born Abt 1310; died Aft 1373. [Group Sheet]
Marguerite married Gérard de Ghistelles Bef 1365. Gérard (son of Jean de Ghistelles and Jeanne de Dixmude) was born Aft 1334; died 1387. [Group Sheet]