Patrick’s Mission to Ireland

Traditional date

Patrick, a Briton once enslaved in Ireland, returns there as a bishop and stays for life, baptising and ordaining clergy. Almost all that is known of him comes from his own two writings; his dates rest on annals compiled much later.

Almost everything that can be known about Patrick comes from two short Latin texts he wrote himself: a Confession composed in old age (Patrick, Confession 10) and an open letter to the soldiers of a ruler called Coroticus (Patrick, Letter to the Soldiers of Coroticus 1–3).

He was a Briton: he writes of his parents and his home country in Britain (Patrick, Confession 23) (Patrick, Confession 43). He was the son of a deacon named Calpornius and grandson of a priest, from a village he calls Bannavem Taburniae; his father also held the civic rank of decurion (Patrick, Confession 1) (Patrick, Letter to the Soldiers of Coroticus 10). At about sixteen he was carried off to Ireland as a captive, with thousands of others (Patrick, Confession 1). For six years he herded animals, and he writes that in those years he began to pray, by day and by night. A voice in his sleep told him that a ship was ready; he walked some two hundred miles to find it and got away (Patrick, Confession 16–19).

Some years later, at home in Britain, he saw in a dream a man called Victoricus carrying letters from Ireland. As he read one he seemed to hear the people who lived beside the wood of Voclut, near the western sea, calling him to come and walk among them again (Patrick, Confession 23). He went back as a bishop (Patrick, Letter to the Soldiers of Coroticus 1–3). He writes that he baptised thousands, ordained clergy, travelled to places where no one had yet come to baptise, gave gifts to kings and judges, and was once robbed and held in irons for fourteen days (Patrick, Confession 50–53). Sons and daughters of Irish rulers became monks and virgins of Christ, and so did women held in slavery, who suffered most for it (Patrick, Confession 41–42).

His mission had critics. At a hearing held in his absence his seniors brought up a sin of his boyhood, confessed before he was made deacon and disclosed by a close friend (Patrick, Confession 26–27, 32). The Confession is his answer. He wished to visit Britain and Gaul but believed himself bound to stay in Ireland for life (Patrick, Confession 43), and he calls the work a gift of God (Patrick, Confession 62). When the soldiers of Coroticus killed some of his newly baptised converts and carried off others, he told Christians not to eat or drink with them or take their alms until they did penance and freed the captives (Patrick, Letter to the Soldiers of Coroticus 1–3) (Patrick, Letter to the Soldiers of Coroticus 7).

Patrick was not the only bishop sent to Ireland. Bede and the Irish annals both record that Pope Celestine sent Palladius as first bishop to the Irish, and Bede’s notice speaks of Irish who already believed in Christ (Bede, Ecclesiastical History 1.13) (Annals of Ulster 431–432). Nor does Patrick name any church he founded. The link with Armagh is found some two centuries later, in the Life by Muirchú, where a local lord gives him the hill on which the church stands (Muirchú, Life of Patrick 1.24). In the sixth century Columba, a monk from Ireland, crossed to Britain to preach to the northern Picts (Bede, Ecclesiastical History 3.4) (Columba Founds Iona).

How this is dated

Traditional date. From later tradition or from internal biblical chronology, with no outside anchor.

Patrick’s two writings give no date, name no ruler whose dates are known and mention no datable event. He says only that he writes in old age (Patrick, Confession 10) and that the Franks are still pagans (Patrick, Letter to the Soldiers of Coroticus 14), which points to the fifth century.

The years on the timeline come from the Irish annals, compiled centuries later. The Annals of Ulster put the sending of Palladius in 431 and Patrick’s arrival in 432 (Annals of Ulster 431–432). They then enter his death three times: under 457 for “the elder Patrick”, under 461 with the words “here some record”, and under 492 and 493, where he is said to have died in the sixtieth year after he came (Annals of Ulster 457, 461, 492–493). The annalists record more than one tradition, and historians remain divided between a death about 461 and one about 493. J. B. Bury, The Life of St. Patrick and His Place in History (1905), argued for 461; the essays in David N. Dumville and others, Saint Patrick, A.D. 493–1993 (1993), collect the evidence and favour 493. The annal for 432 itself appeals to the reckoning of later chroniclers, Bede, Marcellinus and Isidore (Annals of Ulster 431–432).

Primary sources

Confession

Patrick · Fifth century, in Patrick's old age · Latin

The Annals of Ulster

Manuscripts of the late fifteenth and early sixteenth centuries, compiled from older annals · Latin and Irish · Trinity College Dublin, MS 1282; Bodleian Library, Oxford, MS Rawlinson B 489

Life of Saint Patrick

Muirchú moccu Machthéni · Late seventh century, before AD 700 · Latin

Every citation on this page was independently checked against its source on 3 October 2026.

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