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Male William III de Windsor Click to view William III de Windsor in the family tree

William III was born in 1189 in Hakeburn, Stanwell, England.  William III's father was William II de Windsor and his mother was Edyth Plantagenet.  His paternal grandfather is William de Windsor; his maternal grandparents are William Plantagenet of Poitou and Cecily FitzPayn FitzJohn.  He was an only child.  He died at the age of 86 in 1275.


William III's family with UNKNOWN Agnes

They had two sons and a daughter, named William IV, Hugh and Joan.

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