Robert De Grantmesnil
Robert was born in 1003 in Grandmesnil,Calvados.  He died  due to In a Battle between the DE Toeni And the Beaumont Families at the age of 36 in 1039.

 Hawise D'Eschauffen
Hawise was born in 1007.

 Hugh De Grandmesnil
Hugh was born in 1032 in Hinckley,Leicestershire,England.