1 2 Cokayne, George E. (1913). Gibbs, Vicary; Doubleday, H. Arthur (eds.). The complete peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom : extant, extinct, or dormant . Vol. 3 (2nd ed.). London: St. Catherine Press. p. 468.
1 2 Cokayne, George E. (1916). Gibbs, Vicary; Doubleday, H. Arthur (eds.). The complete peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom : extant, extinct, or dormant . Vol. 4 (2nd ed.). London: St. Catherine Press. p. 334.