Ireland, Iona, the Culdees, &c.) from the early centuries of church history and throughout the medieval ages down to the Reformation of the 16th century.
Walafrid's poetical works also include a short life of St Blaithinaic, a high-born monk of Iona, murdered by the Danes in the first half of the 9th century; a life of St Mammas; and a Liber de visionibus Wettini.
Columba established himself on the island of Hy or Iona, where he erected a church and a monastery.
The monastery of Iona was reverenced as the mother house of all these foundations, and its abbots were obeyed as the chief ecclesiastical rulers of the whole nation of the northern Picts.
There were then neither dioceses nor parishes in Ireland and Celtic Scotland; and by the Columbite rule the bishops themselves, although they ordained the clergy, were subject to the jurisdiction of the abbots of Iona, who, like the founder of the order, were only presbyters.