The Battle of Aughrim was the decisive battle of the Williamite War in Ireland. It was fought between the largely Irish Jacobite army loyal to James II and the forces of William III on 12 July 1691, near the village of Aughrim, County Galway.
Contemporary sketch of Aughrim, viewed from the Williamite lines, by Jan Wyk
Godert de Ginkel, the Williamite commander at Aughrim
Henri de Massue led the right of the Williamite cavalry at Aughrim. A French Protestant, he had entered William's service in 1690, forfeiting his French estates and title (the Marquis de Rouvigny) as a result.
Jacobite cavalry officer Patrick Sarsfield. Sarsfield's large reserve of cavalry could have countered the Williamite advance, but he had been ordered not to move without specific orders by the Jacobite commander.
Williamite War in Ireland
The Williamite War in Ireland took place from March 1689 to October 1691. Fought between supporters of James II and his successor, William III, it resulted in a Williamite victory. It is generally viewed as a related conflict of the 1688 to 1697 Nine Years' War.
Battle of the Boyne between James II and William III, 11 July 1690, Jan van Huchtenburg
Schomberg (1615–1690), Williamite commander in Ireland; immensely experienced, he was a Marshal of France, England and Portugal.
French envoy d'Avaux, whose relationship with the Irish was one of mutual mistrust and dislike
The Boyne; a narrow Williamite victory, in which Schomberg was killed (bottom right)