Nicolas, Nicholas Harris. Testamenta VetustaII. London: Nichols and Son. 1826: 557 [3 June 2013]. (原始内容存档于2014-03-13).
Nichols, John Gough, ed. The Diary of Henry Machyn. London: Camden Society. 1848: 191, 282–284, 368–72, 390 [2 June 2013].
Pollard, Albert Frederick. Cheyne, Thomas. Dictionary of National Biography. 1901 supplement. 1901: 421–3 [2 June 2013]. (原始内容存档于2014-04-14). 参数|encyclopedia=与模板{{cite book}}不匹配(建议改用{{cite encyclopaedia}}或|work=) (帮助)
Richardson, Douglas. Magna Carta Ancestry: A Study in Colonial and Medieval Families, ed. Kimball G. Everingham II 2nd. Salt Lake City. 2011: 417. ISBN 1449966381
Gladys Scott Thomson, Two Centuries of Family History, London: Longmans Green and Co., 1930. (Includes an early pedigree of the Earls of Bedford, and builds on J. Horace Round's critique of Wiffen)
Oxford Dictionary of National Biography, Vol. 48, Oxford: Oxford University Press, 2004, pp. 278 et seq.