The origins of St. Patrick are surrounded in mystery and folklore. St. Patrick is often confused with Palladius, who was sent to Ireland in the 5th century by Pope Celestine. Patrick's most famous accomplishment is to have driven the snakes from Ireland. This should not be interpreted literally, as there is no evidence that there were any snakes in Ireland, as it has been a separate island for thousands of years. Scholars believe that snakes were symbolic figures and idols used in the pagan rituals that were being practiced at this time in Ireland.