完全貴族要覧
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Cokayne, G. E. (1926). Gibbs, Vicary & Doubleday, H. Arthur (eds.). The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct or dormant (Eardley of Spalding to Goojerat) (英語). Vol. 5 (2nd ed.). London: The St Catherine Press.