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Male Sir William de Ros I of Hamlake & Helmsley Click to view Sir William de Ros I of Hamlake & Helmsley in the family tree

William was born in 1192 in Helmsley, Yorkshire, England.  William's father was Robert de Ros II and his mother is Princess Isabell Caenmor FitzWilliam of Scotland.  His paternal grandparents were Everhard de Ros and Roese de Trussebutt; his maternal grandfather was King William ("The Lion") I of Scotland and his maternal grandmother is Isabel Avenel. He had a brother named Gilbert.  He was the older of the two children.  He died at the age of 73 in 1265 in Kirkham, England.


William's family with Lucia FitzPiers of Brecknock

They had two sons named Robert and William.

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