(en) John Bernard Burke, A Genealogical and Heraldic Dictionary of the Peerage and Baronetage of the British Empire, H. Colburn, (lire en ligne), p. 284
(en) Romilly's Cambridge Diary 1832-42, CUP Archive, (lire en ligne), p. 250
(en) Debrett's Genealogical Peerage of Great Britain and Ireland, William Pickering, (lire en ligne), p. 82