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Male Guillaume Decourtenay Click to view Guillaume Decourtenay in the family tree

Guillaume was born about 1098 in Courtenay, Loriet, France.  Guillaume's father was Miles (Milo) de Courtenay and his mother was Ermengarde de Nevers.  His paternal grandparents were Josceline de Courtenay and Isabel (Elizabeth) de Montlhery; his maternal grandfather is Reynaud de Nevers and his maternal grandmother was Ida de Forez. He had two brothers named Josceline and Renaud (Reginald) Seigneur.  He was the second oldest of the three children.  He died in 1147.

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