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Earls of Leicester (1107-1204) (Beaumont-le-Roger) by Cawley, Charles in Medieva...
Full citation
Earls of Leicester (1107-1204) (Beaumont-le-Roger) by Cawley, Charles in Medieval Lands: A prosopography of medieval European noble and royal families. Published by Charles Cawley and the Foundation for Medieval Genealogy (FMG) 2006-2021, including source citations and relevant texts; hosted online by FMG, accessed July 2025. (See also WikiTree's source page for MedLands)