Walter I De Bolbec
Walter I was born in 1090 in Normandy, France.  He died at the age of 74 in 1164 in Styford, Northumberland, England.

 UNKNOWN Helawise
UNKNOWN was born in 1104 in Blanchland, Northumberland, England.

 Hugh De Bolbec
Hugh was born in 1125.

 Walter II De Bolbec
Walter II was born in 1130 in Styford, Northumberland, England.  He died at the age of 57 in 1187.