Rev. Alban Butler (171173). Volume IV: April. The Lives of the Saints. 1866.
St. Fiachna, Confessor in Ireland
HE was a native of Desies, in Munster, a monk of Lismore, and disciple of St. Carthagh the younger, in 630. By the most perfect spirit of obedience he laid the foundation of a most sublime gift of prayer and all virtue. He is titular saint of the parish of Kill-Fiachna, in the diocess of Ardfert. See Engus in Chron. and Colgan, MSS. ad 29 Apr.