^ abcdCokayne, George Edward; Hammond, Peter W., eds. (1998). The Complete Peerage, or a history of the House of Lords and all its members from the earliest times (Addenda & Corrigenda). Vol. 14 (2nd ed.). Stroud: Sutton Publishing. p. 640.
^ abWho Was Who 1961–1970 (英語). Vol. VI. London: Adam & Charles Black. 1972. p. 1234. ISBN0-7136-1202-9。
^ abBurke, Sir Bernard; Burke, Ashworth P., eds. (1931). A Genealogical and Heraldic History of the Peerage and Baronetage, The Privy Council and Knightage (英語) (89th ed.). London: Burke's Peerage Limited. p. 2531–2532.