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RICHARDSON, Douglas. Magna Carta Ancestry: A Study in Colonial and Medieval Families, 2nd Edition, 2011. [s.l.]: Douglas Richardson, 2011. Dostupné online. ISBN978-1-4610-4520-5. S. 312. (anglicky)
FARIS, David. Plantagenet ancestry of seventeenth-century colonists : the descent from the later Plantagenet kings of England, Henry III, Edward I, and Edward III, of emigrants from England and Wales to the North American colonies before 1701. Wisconsinská univerzita – Madison: New England Historic Genealogical Society, 1999. 435 s. Dostupné online. ISBN9780880821070. (anglicky)