Columba is one of the best-known saints of the early Celtic church; through his foundation of the abbey of Iona he had a far-reaching influence on medieval Christianity. In about 700, a century after his death, the Life of Columba was written by Adomna'n, ninth abbot of Iona. It has long been valued as the major primary source on the subject, for the light it throws on early medieval Scotland and Ireland, and as an important work of literature. For some time unavailable, Anderson has now revised the Latin text and the English translation, provided new historical notes, and rewritten the...