Columba of Terryglass was a sixth-century Irish abbot and saint who was born in Leinster. As a disciple of Finnian of Clonard, he was recognized as one of the Twelve Apostles of Ireland. His religious journey included studying psalms under Colman Cule and traveling to Rome to seek relics of Saints Peter and Paul. He also visited England to preach to the Anglo-Saxons and obtained a staff from Tours, which belonged to Saint Martin. He is most notably remembered for establishing the monastery at Terryglass.