1 2 3 Townend, Peter, ed. (1963). Burke's Genealogical and Heraldic History of the Peerage, Baronetage and Knightage (英語) (103rded.). London: Burke's Peerage Limited. p.1448.
↑ Cokayne, 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 (2nded.). Stroud: Sutton Publishing. p.432.