The monastery of Mohill-Manchan (Irish: mainistir an Maothail-Manachain) was anciently located at Mohill, in county Leitrim. The earliest church was founded by Manchán of Mohill in the 6th century. Little is known about the former monastic community here. About the year 1216, the monastery became a religious house of the Canons Regular of Saint Augustine dedicated to the Saint Mary until suppression c. 1550 – c. 1590. The Priory of Mohill was briefly revived during Confederate Ireland rule but suppressed again by Cromwellian forces c. 1649–1653. From the ruins , of Protestant denomination, was established in the 18th century.