Gregory the Illuminator, AD 332
The Catholic Encyclopedia tells us that the pagan king of Armenia had Gregory thrown into a pit with dead bodies and snakes, where he lived for 15 years on the kind assistance of a pious widow who brought him bread. For his wickedness, the king was turned into a boar and possessed by a demon. Only the prayers of Gregory could rescue him, and they did. The king was converted to the faith and Gregory was made a bishop in the year 300.