Columba founded the celebrated monastery of Tirdaglas (Tir-da-glasí), or Terryglass in 548. Fintan of Clonenagh received his religious formation at Terryglass and was deeply influenced by the penitential practices and the severity of the Rule.
Columba established the renowned monastery of Tirdaglas (Tir-da-glasí), or Terryglass, in 548. Fintan of Clonenagh received his spiritual training at Terryglass and was profoundly impacted by the penitential practices and the strictness of the Rule.