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Male Geoffrey I Duke of Brittany Click to view Geoffrey I Duke of Brittany in the family tree

Geoffrey I Duke of was born about 0980 in Brittany, France.1   Geoffrey I Duke of's father was Conan I "The Crooked" Of Brittany and his mother was Ermengarde De Anjou.  His paternal grandparents were Juhel Berenger De Rennes and Gerberga Wife Of Juhel Berenger De Rennes; his maternal grandparents were Geoffrey I "Grisegonnelle" De Anjou and Adelaide De Vermandois. He had a sister named Judith (Rennes) Of.  He was the older of the two children.  He died on November 20th, 1008 in Brittany, France.1 


Geoffrey I Duke of's family with Hawise of Normandy

‌Geoffrey I Duke of and Hawise of were married in a religious ceremony in 0996.1   They had four sons and a daughter, named Alain Duke Of, Eudes Comté Penthievre, Geoffrey II of, Robert Lord Of and Adela of.

1 Joanne's Tree.1 GED.GED
Further sources/citations:
Ancestral Roots of Certain American Colonists, 7th Edition, byFrederickLewis Weis, additions by Walter Lee Shippard Jr., 1999 @ 39-22, Cokayne's Complete Peerage, daveanthes.FTW

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