Fintan of Clonenagh was born about 524. He studied under St. Colman in Terryglass in north Tipperary. The Irish for Terryglass is Tír Dhá Ghlas, (which means ‘land of the two streams’). In 550 Fintan settled along the Slieve Bloom Mountains in the solitude. His dwelling was near present day Portlaois town. Fintan set up an oratory which attracted numerous disciples, and formed his own austere rule. Such austerities along with miracles recalled the apostolic ages. Fintan founded his monastery at Clonenagh in Co. Laois. Among his disciples were St. Comgall of Bangor, St Colmán of Oughaval, and St Aengus the Culdee. Culdee in Irish is Céile Dé which in Irish which means spouse of God.
A thaumaturge, Fintan was a prophet, and performed miracles. For his austere living Fintan is considered an Irish equivalent to St. Benedict. Fintan is also considered as the “Father of Irish Monks”. According to a disciple Oengus, Fintan lived on “bread of woody barley and clayey water of clay”. Despite the hardships, Fintan’s monastery flourished with young monks from all over Ireland. The monastery of Clonenagh was an important seat of learning with students coming from all over Europe. Among the disciples at Clonenagh was St Comgall, founder of Bangor moastery. There was Oengus, the disciple of Fintan, who became an associate of St Maelruain of Tallaght and was also a member of the Céilí Dé reform movement. Fintan was succeeded by Fintan Maeldubh at the Abbey of Clonenagh.
At St. Fintan’s Tree in Clonenagh, there is a well that sprung up in in a field and the farmer who lived close by, refused people a visit to this holy well. So much so, that the well miraculously transferred itself to St. Fintan’s tree. It became known as “The Money Tree” as people hammered coins into its bark with prayerful intentions. This tree was blown down in a storm in 1994.
The lost Book of Clonenagh is a source cited by Geoffrey Keating in his Foras Feasa ar Éirinn (The General History of Ireland) regarding the Synod of Rath Breasail which was to lay the foundations stones for the current diocese structure in Ireland.
Fintan died on 17th February, around the year 603.
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