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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 Rennes, Ille-et-Vilaine, Bretagne, France.  Geoffrey I Duke of's father was Conan I Duke of Brittany , Comte de Rennes and his mother was Ermengarde d' Anjou. He had a sister named Judith of.  He was the older of the two children.  He died on November 20th, 1008 in Nantes, Loire-Atlantique, Anjou/Pays de la Loire, France.

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.

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