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Male King William de Montagu of Man Click to view King William de Montagu of Man in the family tree

William was born in Cassington, Oxfordshire, England.  William's father was William de Montagu and his mother was Elizabeth de Montfort.  His paternal grandparents were Lord Simon de Montagu of Berhamstead Castle and Hawaise de Saint Amand; his maternal grandfather was Peter de Montford and his maternal grandmother is Matilda de la Warr.  He was an only child.  He died in Windsor Castle, Berkshire, England.  He was buried in Bisham, Berkshire, England.


William's family with Katherine de Grandison

‌William and Katherine were married in a religious ceremony in 1327 in Cassington, Oxfordshire, England.  They had a son and a daughter, named John and Philippe.

Source/Citation
British Kings and Queens @ p. 581

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