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Male Sir. William de Ros Click to view Sir. William de Ros in the family tree

William de was born after 1192 in , Helmsley, Yorkshire, England.  William de's father was Lord Robert II ("Furfan") de Ros and his mother was Princess Isabel Scotland.  His paternal grandparents were Everard de Ros and Roese deTrussebutt; his maternal grandparents were King William of Scots (The Lion) and Miss Avenel. He had two brothers named William I de and William of Helmsley.  He was the oldest of the three children.  He died about 1264.


William de's family with Lucia FitzPiers

They had a son named William.

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