Gervase De Grantmesnil
Gervase was born in 0977.
Gervase's family
He had a biological son named
Robert
.
Children
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.
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