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Male Guillaume III De Tancarville Click to view Guillaume III De Tancarville in the family tree

Guillaume III was born about 1155.  Guillaume III's father was Guillaume II De Tancarville and his mother was Théophanie De Penthièvre.  His paternal grandparents were Rabel De Tancarville and Agnès Stigand De Mézidon; his maternal grandparents were Etienne Ier De Penthièvre and Havoise De Guinguamp. He had a brother named Raoul III.  He was the younger of the two children.  He died on July 27th, 1214 in , Bouvines, 59,.


Guillaume III's family with Hélissende Ou Alix De Beaumont-Meulan-Gournay

They had two daughters named Isabelle and Agnès.

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