The life of St Columba of Iona
There he founded the monastery that became the base for his mission to bring Christianity to the Picts and secure it more widely across Scotland, a community whose abbots came to hold such standing that they carried authority even over bishops in the region for generations after him. His influence reached into worldly affairs as well: he is remembered as having consecrated Aedan mac Gabrain king over Dal Riata at Iona itself, binding the young monastery to real political weight from its earliest years.
Much of what later generations knew of Columba's life, and of the many miracles credited to him, comes from a Life written roughly a century after his death by Adomnan, ninth abbot of Iona in the line running back to Columba himself. Whether every incident in that account happened exactly as told is less certain than the plain fact of the reverence it reflects, the scale of authority his own community believed him to have carried.
He died on Iona on June 9, 597, remembered as the enlightener who carried the faith from Ireland into Scotland and left behind a monastery that shaped that region's Christian life for centuries.

