↑ Cokayne, G.E. et al, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume III
↑ Weir, Alison. (1999) Britain's Royal Family: A Complete Genealogy. London: The Bodley Head.