Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, Extant, Extinct, or Dormant, 2000 @ VI:361
The cited information was published by Name: Alan Sutton Publishing, 1910-1959; Location: Gloucester, U.K.; Date: 2000; (Ref: VI:361) The author/originator was G.E. Cokayne, with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden.