References for Lady Georgiana Elizabeth Spencer-Churchill

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Sir B.Burke: A Genealogical History of the Peerages and Knightages of the British Empire. London, 1953
Sir B.Burke: Burke's Peerage and Baronetage. London, 1999
F. Freytag v.Loringhoven: Europäische Stammtafeln, Band III, Tafel 159. Marburg, 1956 (1964)
Gothaischer genealogischer Hofkalender auf das Jahr 1879. J.Perthes, Gotha, 1878