The Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom. 1887–98 (8 vols); 1910–59 (13 vols). 6 vols. Gloucester: Alan Sutton, 1982.
Oxford Dictionary of National Biography. 01/05/2005 (http://www.oxforddnb.com)
The Victoria History of the County of Middlesex. The Victoria History of the Counties of England. 11 vols. London; London and Oxford: Archibald Constable [vol 2]; Oxford UP [vols 1, 3–11], 1911 [vol 2], 1962–98 [vol 1, 3–11].
