|William Fitz Osbern Earl of Hereford
William Fitz Osbern Earl of Hereford 1
Weis, Frederick Lewis and Walter Lee Sheppard, Jr; William R. Beall and Kaleen E. Beall, eds, Ancestral Roots of Certain American Colonists Who Came to America before 1700 (8th ed. Baltimore: Genealogical Publishing Company, 2008.), Line 53-25 (Robert de Beaumont).