James Fitz-James Stuart, 2nd Duke of Berwick
James FitzJames, 1st Duke of Berwick, 1st Duke of Liria and Jérica, 1st Duke of Fitz-James (21 August 1670 – 12 June 1734) was an Anglo-French military leader and the illegitimate son of King James II and VII by Arabella Churchill, sister of the 1st Duke of Marlborough. Berwick was a successful general in the pay of Louis XIV of France. Wikipedia