References for Lady Susan Gordon
Sir B.Burke: The Dormant and Extinct Peerage. London, 1866
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
Gothaischer genealogischer Hofkalender auf das Jahr 1899. J.Perthes, Gotha, 1898
M.A.H., Marquis de Ruvigny: The Plantagenet roll of the blood royal, Clarence Volume. London, Edinburgh, 1905