Columba

Columba or Colmcille was an Irish abbot and missionary credited with spreading Christianity at the start of the Hiberno-Scottish mission in what became Scotland. He founded the important abbey on Iona, which became a dominant religious and political institution in the region for centuries. He is the patron saint of Derry and one of the patron saints of Ireland along with Patrick and Brigid. He was venerated by both the Gaels of Dál Riata and the Picts, and is remembered as one of the Twelve Apostles of Ireland.