
The Siege of Athlone beginning on July 17, 1690, is a week-long Williamite assault against Jacobite-held Athlone, ending in a Jacobite victory due to effective defense of the city and the destruction of the connecting bridge over the River Shannon.
The siege occurs during the Williamite War in Ireland (1689–1691), in which supporters of King James II, known as the Jacobites, fight against the Williamite forces of King William of Orange. Athlone, a strategic town on the River Shannon, serves as a key defensive position for the Jacobites after the Williamite victory at the Battle of the Boyne earlier in July 1690.
On July 17, 1690, Williamite Lieutenant General James Douglas approaches Athlone with 12,000 soldiers, consisting of ten regiments of foot and five regiments of horse. The Jacobite garrison, commanded by Colonel Richard Grace, comprises approximately 4,500 men with three regiments of foot and eleven troops of horse.
Prior to the Williamite arrival, Jacobite troops destroy the bridge over the River Shannon, separating the eastern and western parts of the city and greatly strengthening the defense.
General Douglas demands the city’s surrender, but Colonel Grace famously refuses, shooting over the messenger’s head and declaring he will defend the city until his provisions are exhausted. The Williamites begin a bombardment utilizing twelve cannon and two mortars, while the Athlone defenders return fire.
Efforts to ford the River Shannon by the Williamite army after two days are repelled with significant losses, and ongoing artillery engagement continues throughout the week. Rumors of the approaching Jacobite cavalry under Patrick Sarsfield contributes to Douglas’s decision to retire. The Williamites suffer about 400 casualties and eventually retreat on July 24, 1690, marking a Jacobite victory.
Although the first siege ends in failure for the Williamites, it showcases the resilience of the town’s defenses and the leadership of Colonel Richard Grace. Athlone later falls in June 1691 during the second siege, where Grace dies defending the city. The 1690 siege is notable for its strategic defensive measures, including the destruction of the bridge and strong resistance against a superior attacking force, which temporarily blocks Williamite advances in central Ireland.
The first Siege of Athlone demonstrates the effectiveness of prepared urban defenses in 17th-century warfare and has implications for subsequent engagements during the Williamite War, setting the stage for the eventual fall of Athlone and other key territories in 1691.








