563 · Iona, Scotland

Columba Founds the Monastery of Iona

In 563 AD, the Irish monk Columba and twelve companions crossed the sea to the island of Iona off the coast of Scotland, founding a monastery that became the spiritual center of Celtic Christianity and a launching pad for the evangelization of Scotland, England, and beyond.

Columba was already a well-known abbot in Ireland when he left. The traditional story says he departed as penance — he had been involved in a dispute that led to a battle, and the deaths weighed on his conscience. Whether or not the details are exactly right, Columba and twelve companions sailed to the small island of Iona in the Inner Hebrides around 563. The island was rocky, windswept, and about three miles long. They built a simple monastery of wood and wattle and began the work of prayer, copying manuscripts, and preaching to the Picts of Scotland. Iona became something extraordinary. It was a center of learning where monks produced illuminated manuscripts — the Book of Kells, one of the great masterpieces of medieval art, is associated with the Iona community. It was a base for missionary activity that sent monks across Scotland and into northern England. Aidan, who would evangelize Northumbria from Lindisfarne, came from Iona. The monastery followed the distinctive practices of Irish Celtic Christianity — a different method of calculating Easter, a different tonsure, a strong emphasis on peregrinatio, or wandering exile for the sake of Christ. These differences would eventually be resolved at the Synod of Whitby in 664, but the energy and devotion that Iona produced were never in question. Columba died on Iona in 597, the same year Augustine of Canterbury arrived in southern England. Between the two of them — one Irish, one Roman — most of Britain was brought into the Church. Iona was raided by Vikings in 795, 802, and 806, eventually forcing the community to relocate to Kells in Ireland. But the island retained its sacred character. Scottish kings were buried there for centuries. Today, the rebuilt abbey is an ecumenical center, but the island still carries the weight of what Columba started — a small community on a bare rock that changed the religious map of northern Europe.

Why it matters

Created the most influential center of Celtic Christianity, which evangelized Scotland and northern England, produced masterpieces of sacred art, and shaped the distinctive character of Irish-influenced Catholic monasticism.