Manchan of Mohill

Saint Manchan of Mohill, a holy monk, is an Irish saint of the 5th and 6th centuries, honored as the founder of several churches and monasteries in Ireland. His life is shrouded in uncertainty, since many Irish Christians bore the name Manchan (from manach, "monk").

Scholars who have sorted the sources (among them Colgan) regard him as a person distinct from the other Manchans, among other reasons because feast days and dates do not agree. According to the Annals of Tigernach he reposed in 538; he is thought to have been born in Ireland or Wales and to have belonged to the "first order" of the Patrician clergy, that is, those who accompanied or followed Saint Patrick. The Irish martyrologies commemorate him together with his "companions". Among the churches he founded are those of Mohill in County Leitrim (the monastery of Maothail-⁠Manachan) and Ennisnag in County Kilkenny.

He is commemorated on 14 February, by the Western calendar (new style), and honored as a saint of the undivided Church.