Jean de MONTFORT Count
Jean de was born about 1210.  He died in 1249.

 Jeanne de CHATEAUDUN
Jeanne de was born in 1227 in <Acre,,Palestine>.¹ 

 Beatrix De MONTFORT COUNTESS OF MONTFORT-L'AMAURY
Beatrix De was born about 1240 in Of,,France.  She died on March 9th, 1311.