William was born about 1070. William's father is Robert St. Leger. He had a brother named Robert. He was the younger of the two children. He died about 1120.
General Notes
Lord of St. Leger in Eu in Normandy, and Fairlight and Wertlignes in Sussex and Ulcombe in Kent. Succeeded his father in the lands gained at the Norman Conquest. But he also possessed whilst his father was alive, considerable land in Sussex probably part of his wife's dowry. They both donated the tythes of their manor at Promhill-Sussex to Battle Abbey between 1090 and 1100. (Les St. Legers Travers L'Histoire by Maurice & Bernard St. Leger).