William Tirry OSA was an Irish Roman Catholic priest of the Order of Saint Augustine following the Cromwellian conquest of Ireland. He was captured by the priest hunters at Fethard, County Tipperary while continuing his priestly ministry covertly and was hanged at Clonmel, officially for high treason against the Commonwealth of England, but in reality as part of The Protectorate's systematic religious persecution of the Catholic Church in Ireland. Pope John Paul II beatified Friar William Tirry as one of the 24 officially recognized Irish Catholic Martyrs in 1992.
