His great grandparents through his paternal grandmother were therefore Charles II of England and his mistress Barbara Palmer, 1st Duchess of Cleveland.
There is little evidence to prove that it was a genuine French noble title,[1] but if so, then his male line descendants, including Charles, would be entitled to be styled Comte d'Arran.
[6] Including the title, he would have been Lt Col Charles Stuart FitzRoy Douglas-Hamilton James, Comte d'Arran.
They were married on 15 June 1760 and had two children:[1][7] Charles went on to publish a book written by his father, Transactions during the Reign of Queen Anne, from the Union to the Death of that Princess in 1790.
He also wrote books of his own, The Patriot; Tragedy, altered from the Italian of Metastasio, an eight volume set in 1784; An Historical Relation of the Origin, Progress, and Final Dissolution of the Government of the Rohilla Afghans, in the Northern Provinces of Hindustan, compiled from a Persian Man, and the original papers, another eight volume set in 1787; and finally Hedaya, or Guide; a Commentary on the Mussulman Laws, translated by order of the Governor-General and Council of Bengal, a four volume set published in 1791.