The Treaty of Limerick () ended the Williamite war in Ireland between the Jacobites and the supporters of William of Orange. It concluded the Siege of Limerick. The treaty really consisted of two treaties which were signed on 3 October 1691. Reputedly they were signed on the Treaty Stone, an irregular block of limestone which once served as a mounting block for horses. This stone is now displayed on a pedestal in Limerick. Because of the treaty, Limerick is sometimes known as the Treaty City.