Columba (Colum Cille), Abbot and Missionary. Secondary Patron of Ireland. One of the 'Twelve Apostles of Ireland' (6th Century Irish monastic saints who studied under St. Fintan)
He founded Irish monasteries at Derry, Kerry and Kells before sailing to Iona off the Scottish Isle of Mull to form a community. This was his base for the evangelisation of Scotland and Northern England.
Feast Day 9th June.