Seigneur Simon I de Montfort
Simon was born about 1025 in Montfort, France.  He died about 1087.

 Agnes d'Evereux
Agnes was born about 1030 in Normandy, France.

 Bertrade de Montfort
Bertrade was born about 1059 in Montfort, France.  She died on February 14th, 1117 in Fontevrault, Anjou, France.