Berwick, James Fitzjames, Duke of Berwick
1670-1734. French marshal, illegitimate son
of the Duke of York (afterwards James II of
England) and Arabella Churchill (1648-1730),
sister of the great duke of Marlborough, his
enemy in battle. He was made duke of Berwick
in 1687. After the revolution of 1688 he
served under his father in Ireland, joined
the French army, fought against William III
and Marlborough, and in 1707 defeated the
English at Almansa in Spain. He was killed at
the siege of Philippsburg.