James FitzJames, 1st Duke of Berwick

French-English army officer (1670–1734)

James FitzJames, 1st Duke of Berwick, 1st Duke of Liria and Jérica, 1st Duke of Fitz-James (21 August 1670 – 12 June 1734) was a French-English army officer who was the eldest illegitimate son of James II of England by Arabella Churchill, the sister of John Churchill, 1st Duke of Marlborough. Born and raised in France, Berwick was a senior Jacobite commander in his father's army during the Williamite War in Ireland. He subsequently became a successful general in the service of Louis XIV and in 1706 he was made a Marshal of France.

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