Already a Christian, and of royal Osraige blood, he had determined to study for the Church; hence, he secured an education at Tours and Rome.
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He settled as a hermit at Saigir near to the Slieve Bloom Mountains, but soon disciples were attracted to him and a large monastery grew up round his cell, which became the chosen burial place for the Kings of Ossory.
Alfred Munn Moore in his Notes on the Place Names of the Parishes and Townlands of the County of Londonderry, makes note that St. Ciaran was known as the "ancient priest" or "Sean Saighir", possibly referring to St. Ciarán of Saigir.
Ciarán Hinds | Ciaran O'Brien | Ciaran Griffiths | Ciarán Carson | Ciarán of Saigir | Ciarán Murphy | Ciaran Gultnieks | Ciaran Bourke | Cormac mac Ciaran |
He is sometimes claimed as one of the pre-Patrician Saints, with Ciaran, Declan, and Ibar, but the annals note his death in 528 (i.e. after the death of Saint Patrick in 460).