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Male William De Roos Click to view William De Roos in the family tree

William was born about 1195 in Helmsley, Holderness, Yorkshire, England.  William's father was Robert De Roos and his mother is Isabella of Scotland.  His paternal grandparents were Everard De Roos and Rose Trusbut; his maternal grandparents were I William and Ermengarde De Beaumont. He has a brother named Robert.  He is the older of the two children.


William's family with Lucia FitzPiers

They had three sons named Robert, William and Alexander.

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