Patrick Sarsfield undoubtedly one of the most romantic figures of Irish history, has always captured the popular imagination. This biography describes Sarsfield’s unpromising early career and his subsequent success as the outstanding Irish soldier in the Williamite War with special focus on Sarsfield's attack on Sligo, his part in the battle of the Boyne and his celebrated raid on King William's artillery train outside Limerick. Sarsfield's prominent and outspoken part in politics of the day is evaluated as are his actions in the final stages of the war in Athlone, Aughrim and Limerick.