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Male William de ROS Click to view William de ROS in the family tree

William de was born about 1194 in Helmsley, England.  William de's father was Robert de ROSS and his mother was Isabel of SCOTLAND.  His paternal grandparents were Everard de ROS and Roesia TRUSSEBUT; his maternal grandparents were William I King of SCOTLAND and Isabel AVENAL.  He was an only child.  He died in 1226 in England.


William de's family with Lucia FITZPIERS

They had a son named Alexander de.