Simon I De Montfort
Simon I was born about 1026 in Montfort, Normandy, France.

 Agnes De Evereux
Agnes was born about 1030.

 Bertrade De Montfort
Bertrade was born about 1060 in Montfort Amauri, , France.

 Amaury De Montfort
Amaury was born about 1070 in Montfort, Eure, France.  He died on April 19th, 1137.