References for Charles Duke? Stuart * of Cambridge

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A.C. Addington: The Royal House of Stuart, Vol. I, p.5. Charles Skilton Ltd, London, 1969
Sir B. Burke: A Genealogical History of the Dormant, abeyant, forfeited and extinct peerages of the British Empire. London, 1866
D.Schwennicke: Europäische Stammtafeln, Vol. II, Tafel 95. Marburg, 1984