hey, just thinking of some ideas… well, my namesake, Saint Michael the Archangel often appears with the devil or a serpent/dragon at his feet. Saint Patrick from what I have heard pushed snakes away from regions in Ireland and therefore is known for that. Are you for sure it’s not Saint George and the serpent/dragon? I honestly don’t know what else! Saint Michael and Saint George are known for major encounters with dragons/serpents, and then there is Saint Patrick driving snakes out of Ireland, so I’m not sure! I hope this was helpful! And don’t feel bad, if God wills it you will remember the saint, if not, then it’s a lesson in life to remember! God bless you! And Happy Easter!