St. Severin of Noricum was a Christian monk and missionary who lived during the 5th century. He is best known for his efforts to spread Christianity in the region of Noricum, which is now part of modern-day Austria and Slovenia. Severin founded several monasteries and played a significant role in the spiritual development of the area. He is often associated with the establishment of the Benedictine monastic tradition in Noricum. St. Severin is venerated as a saint in both the Roman Catholic Church and the Eastern Orthodox Church, with his feast day celebrated on January 8. His life and work contributed to the growth of Christianity in Central Europe.