18th March, (5th March O.S.):
- CARON, the church at Tregaron in Dyfed in Wales is dedicated to him.
- CARTHAGE THE ELDER, the successor of St. Kieran (vide infra) as Bishop of Ossory in Ireland. He reposed circa 540.
- CLEMENT, an abbot of Santa Lucia in Syracuse in Sicily, who reposed circa 800.
- COLMAN OF ARMAGH, a fifth century disciple of St. Patrick (17th March) in Ireland.
- EUSEBIUS AND COMPANIONS, a group of ten martyrs who suffered in North Africa.
- EUSEBIUS, a native of Cremona in Lombardy who became an abbot in Bethlehem where he took part in the struggle against Origenism. He reposed circa 423.
- KIERAN (KIEMAN, KYRAN, CIARAN), called 'the first-born of the saints of Ireland'. He was born in Ossory, was probably consecrated bishop by St. Patrick (17th March), and has been venerated from time immemorial as the first Bishop of Ossory and founder of the monastery of Saighir. He reposed circa 530.
- OLIVA, martyred, perhaps in Brescia, under the Emperor Hadrian in 138.
- PIRAN (PYRAN), a hermit near Padstow in Cornwall, who reposed circa 480. He is venerated as the patron-saint of miners, and the town of Perranporth is named after him.
- VIRGILIUS OF ARLES, a monk from Lérins who became Bishop of Arles, and probably consecrated Augustine, Archbishop of Canterbury. He reposed circa 610.
* - Prior to the Schism the Patriarchate of Rome was Orthodox and fully in communion with the Orthodox Church. As Saint John of Shanghai and San Francisco +1966 said "The West was Orthodox for a thousand years, and her venerable Liturgy is far older than any of her heresies."