Feastday: 24 July

First bishop of Ardmore in Ireland was baptized by St. Colman, and preached the faith in that country a little before the arrival of St. Patrick, who confirmed the episcopal see of Ardmore, in a synod at Cashel in 448. Many miracles are ascribed to St. Declan, and he has ever been much honored in the viscounty of Dessee, anciently Nandesi.

Feastday - 31 January

Monastic founder, bishop, and miracle worker known for his kindness to animals. Known as Edan, Modoc, and Maedoc in some records, Aidan was born in Connaught, Ireland. Tradition states that his birth was heralded by signs and omens, and he showed evidence of piety as a small child.

Educated at Leinster, Aidan went to St. David monastery in Wales. He remained there for several years, studying Scriptures, and his presence saved St. David from disaster. Saxon war parties attacked the monastery during Aidan's stay, and he supposedly repelled them miraculously.

In time, Aidan returned to Ireland, founding a monastery in Ferns, in Wexford.

Feastday: 9 August

Felim (spelt Fedilmith in Adomnán's life of Columba) was the father of Columba (Colmcille), according to tradition. The abbey on Trinity Island in Lough Oughter, not far from the diocesan cathedral, recalls the early days of Christianity in Cavan and the neighborhood.

A later Norman doorway from the island is now incorporated in the present cathedral. William Bedell, the much honored 17th century bishop of Kilmore, is remembered for his saintly life and his work of translating the scriptures into the Irish language.

Irish Saints & Feastdays

This link will take you to an extensive list of Irish saints and their feastdays. But there are many more "minor" saints, not recorded.