Roger 'Le Poitevin' de Montgomery
Roger 'Le Poitevin' was born about 1058 in Mortaigne, Normandy.  He died in 1123.

 Adelmode de la Marche
Adelmode was born about 1062 in Marche, Poitou, France.  She died in 1116.

 Philip de Montgomery
Philip was born about 1084 in Mortaigne, Normandy.

 Avise de Lancaster
Avise was born about 1088 in Nottingham, England.  She died after 1149.

 Ponce de Montgomery
Ponce was born about 1100 in Mortaigne, Normandy.