The Alumnus of Collumcille (Gilla Collum)

 

 

The attached 7th century map illustrates monastic sites of Ireland (marked with red squares), that were part of the alumnus of columcille, whose primary centre of learning was situated at that time in Iona Scotland.

Irish  monastics from Derry, Kells, Swords and Durrow once trained in thier ecclesiastic roles, were rotated to Iona, Oban and Dunkeld both for advanced religious instruction and also as monastic caretakers (laity):