Columba was a 6th-century Irish monk, abbot, and missionary who played a fundamental role in spreading Christianity within Scotland. Born in County Donegal, he studied under several prominent church leaders and established numerous monasteries throughout Ireland. Around 563, he moved to the island of Iona, where he founded an abbey that served as a major religious and political hub for the region. Known as a member of the Twelve Apostles of Ireland, he is celebrated for his influence among both the Picts and the Gaels.