Mo Chutu of Lismore

Mo Chutu mac Fínaill (died 14 May 639), also known by the names Mochuda, Carthach, or Carthach the Younger, was a significant figure in the early Irish Church. He served as the abbot of Rahan in County Offaly before becoming the founder and first abbot of the renowned Lismore Abbey in County Waterford. His life and deeds are documented in various Irish and Latin recensions of his Life, which appear to originate from an 11th or 12th-century Latin text.

Life and Historical Context

Belonging to the Ciarraige Luachra through his father, Fínall Fíngein, and the Corco Duibne through his mother, Finmed, Mo Chutu's early life and influences are rooted in the tribal structures of Munster. Historical notes suggest his foster father was Carthach mac Fianáin, also known as Carthach the Elder, active in the late 6th century. Mo Chutu first established himself as abbot of Rahan, a monastery situated within the territory of the southern Uí Néill. It was here that he composed a notable rule for his monks, an Irish metrical poem of 580 lines divided into nine sections, which stands as a significant literary relic of the early Irish Church.

According to the Annals of Ulster, Mo Chutu faced expulsion from his monastery during the Easter season of 637. This event is thought to be linked to the Easter controversy that involved Irish churches in the 7th century. His possible training in Munster may have aligned him with the Roman system of calculation, potentially leading to conflict with those adhering to the 'Celtic' reckoning prevalent in Leinster.

Founding of Lismore Abbey

Following his expulsion, Mo Chutu and his followers journeyed to the Déisi people, finding refuge along the river bank at the monastic site of Ardfinnan. After a peaceful land agreement with the King of the Déisi, he established monastic cells at what became Ardfinnan Abbey and, significantly, further south at Lismore. It was at Lismore that he founded the great Lismore Abbey, a foundation that would greatly flourish after his lifetime, surpassing the reputation of his earlier church. The Latin and Irish Lives of Mo Chutu tend to focus on his resistance to oppressive Uí Néill rulers and his positive reception among the Déisi, portraying him in a heroic light, particularly in the text "Indarba Mo Chutu a r-Raithin" (The expulsion of Mo Chutu from Rahan).

Lismore Abbey proved resilient, withstanding Viking depredations and benefiting from the patronage of Munster kings, including the Mac Carthaig of Desmond. This foundation ultimately became an episcopal see, a privilege previously aspired to by Déclán's earlier foundation at Ardmore.

Veneration

Mo Chutu's feast day is observed on 14 May in the Irish martyrologies and the Great Synaxaristes of the Eastern Orthodox Church. In the modern Catholic Church in Ireland, where 14 May is the feast of Saint Matthias, the memorial of Saint Carthage is celebrated on 15 May.