Mo Chutu of Lismore

Saint Mo Chutu of Lismore
Mochutu, Carthach (the Younger), Carthagus, Carthage, Mochuda
Mo Chutu along with St. Catherine and St. Patrick on an altar tomb of 1543 in St Carthage's cathedral in Lismore
Personal details
Died	14 May 639(639-05-14)
Sainthood
Feast day	15 May
Venerated in	Roman Catholic Church Orthodox Church
Patronage	Lismore, Ireland

Saint Mo Chutu mac Fínaill (died 14 May 639), also known as Carthach or Carthach the Younger (a name Latinized as Carthagus and Anglicized as Carthage), was abbot of Rahan, County Offaly and subsequently, founder and first abbot of Lismore (Irish Les Mór Mo Chutu), County Waterford. The saint's Life has come down in several Irish and Latin recensions, which appear to derive from a Latin original written in the 11th or 12th century.

Through his father, Fínall Fíngein, Mo Chutu belonged to the Ciarraige Luachra, while his mother, Finmed, was of the Corco Duibne. Notes added to the Félire Óengusso (the Martyrology of Óengus) claim that his fosterfather was Carthach mac Fianáin, that is Carthach the Elder, whose period of activity can be assigned to the late 6th century.

Mo Chutu first became abbot of Rahan, a monastery which lay in the territory of the southern Uí Néill. He composed a rule for his monks, an Irish metrical poem of 580 lines, divided into nine separate sections, a notable literary relic of the early Irish Church.

According to the Annals of Ulster, he was expelled from the monastery during the Easter season of 637. The incident has been connected with the Easter controversy, in which Irish churches were involved during the 7th century. Through his training in Munster, Mo Chutu may have been a supporter of the Roman system of calculation, which would have brought him into conflict with adherents of the 'Celtic' reckoning in Leinster.

Following his expulsion, Mo Chutu journeyed to the Déisi, where he founded the great monastery of Lismore (in modern County Waterford). The Latin and Irish Lives make very little of Mo Chutu's earlier misfortune and focus instead on the saint's resistance to the oppressive Uí Néill rulers and his joyous reception among the Déisi. He has been portrayed in a heroic light in Indarba Mo Chutu a r-Raithin (The expulsion of Mo Chutu from Rahan).