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)
Page, William, and R.W. Dunning, eds. The Victoria History of the County of Somerset. Victoria History of the Counties of England. 4 vols. London; Oxford: Constable [vols 1–2]; Oxford UP [vols 3–8], 1906–12 [vols 1–2]; 1974–2004 [vols 3–8].
Roskell, J.S., Linda Clark and Carole Rawcliffe, eds. The History of Parliament: The House of Commons, 1386–1421. 4 vols. Stroud: Alan Sutton Publishing for The History of Parliament Trust, 1992.
