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Male William IV , Count of Poitou Click to view William IV , Count of Poitou in the family tree

William IV , Count was born about 1026.  William IV , Count's father was William III "The Great" , Count of Poitou and his mother was Agnes de Bourgone.  His paternal grandparents were Guillaume II "Fier de Bras" , Count of Poitou and Emma de Blois; his maternal grandparents were Otto William , Count of Burgundy & Macon and Ermentrude of Rouncy. He had a brother and a sister, named Peter , Count and Agnes.  He was the youngest of the three children.  He died on September 25th, 1086.


William IV , Count's family with Hildegarde \Aldegarde of Burgundy

‌William IV , Count and Hildegarde \Aldegarde were married in a religious ceremony.  They had a son named Guillaume IX , Duke.

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