Thurstan (Toussaint) (Bastenbourg) De Montfort
Thurstan (Toussaint) (Bastenbourg) was born about 0943 in , , , Normandy.  He died about 1023.  He was buried about 1023.

 Adeline De Montfort
Adeline was born about 0953 in , , , Normandy.

 Hugh I De Montfort
Hugh I was born about 0975 in , , , Normandy.  He died about 1027.  He was buried about 1027.