Geoffrey I Count Of Mortagne

Geoffrey I was born about 1015 in France.  Geoffrey I's father was Warin Seigneur De Montagne and his mother is Melisende.  His paternal grandfather is William Alencon; his maternal grandparents are Hugh Chateaudun and Hildegarde.  He was an only child.  He died in December 1031.

They had a son named Routrou I.