Thurston de Montfort
Thurston was born in Bastembourg, Normandy, France.  He died in 1003.

 Juliane Murdac
Juliane was born about 0943 in France.

 Adeline de Montfort
Adeline was born about 0953 in Normandy, France.

 Count Hugh de Montfort I of Montfort-sur-Rislet
Hugh was born about 0975 in Montfort-sur-Risle, Eure, Normandy, France.  He died in 1037 in Normandy, France.

 Richard ("Thurstin Haldup") de la Haye
Richard, known as "Thurstin Haldup", was born about 1013 in La Haye Du Puis, Normandy, France.  He died before 1080.

 William Bertram
He died after 1012.