Marie married Jean de Ghistelles Aft Jun 1337, France. Jean (son of Jean de Ghistelles and Marguerite de Luxembourg) was born Abt 1290; died 26 Aug 1346, Bataille de Crécy-en-Ponthieu, Somme, Picardie, France; was buried , Église Notre-Dame de Ghistelles, Flandre-Occidentale, Belgique. [Group Sheet]