Declán of Ardmore
Declán of Ardmore (Old Irish: Declán mac Eircc; Irish: Deaglán, Deuglán; Latin: Declanus; died 5th century AD), also called Déclán, was an early Irish saint of the Déisi Muman, who was remembered for having converted the Déisi to Christianity in the late 5th century and for having founded the monastery of Ardmore (Ard Mór) in what is now County Waterford. The principal source for his life and ministry is a Latin Life of the 12th century.