St. Patrick, patron saint of Ireland, who was actually born in England, was kidnapped in his youth and forced into slavery in Ireland. He escaped, then was sent back to Ireland as a priest to convert the pagans to Catholicism.
He is famous for his sermon at the Rock of Cashel, where he used a shamrock to explain the three-in-one nature of the Holy Trinity.
Catholics, the world over, make pilgrimages to this holy site.
As for his banishing snakes from Ireland, there were never any snakes to expel.
There are no reptiles and scarce amphibians in Ireland. That is due to the recession of the ice age and migration of the slowest creatures northward. When the ice finally melted, animals began to migrate northward. The fastest ones made it to Ireland including deer and badgers. Slow movers such as reptiles were stopped cold by the water rising around Ireland, and were locked out because of the melting land bridge.
There are also no mosquitoes in Ireland.
Who's complaining?!
