Bibliography
- Boutell, Charles. The Handbook to English Heraldry. University of Michigan, Michigan:
- Reeves and Turner, 1914. 138.
- Cannon, John, and Ralph Griffiths. The Oxford Illustrated History of the British Monarchy. New York, New York: Oxford UP, 1988. 147.
- Crawford, Anne. Letters of Medieval Women. Grand Rapids: Sutton, Limited, 2002. 35.
- French, George R. Shakespeareana Genealogica. Boston, Massachusetts: Macmillian, 1869. 5-30.
- Richardson, Douglas. Plantagenet Ancestry : A Study in Colonial and Medieval Families. Boston: Genealogical Company, Incorporated, 2004. 13-18.
- The Yorkshire Archaeological Society. The Yorkshire Archaeological Journal. Yorkshire: Yorkshire Archaeological Society, 1905. 163.
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