| Sources |
1. [S60] Magna Charta: The Pedigrees of the Barons, John S. Wurts, (Brookfield Publishing Co., Philadelphia, PA, 1942)
2. [S58] Britannia Internet Magazine, Edited by David Nash Ford, (http://www.britannia.com/)
3. [S59] Monarchs, Rulers, Dynasties and Kingdoms of the World, R.F. Tapsell, (Facts on File Publications, New York, 1983)
4. [S57] GEN-MEDIEVAL/soc.genealogy.medieval: Llywelyn ap Iorwerth ancestor table, Volume:, Stewart Baldwin, (Volume: Updated 12 October 2001)
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