Saint Patrick’s Day & Christianity

Saying has it that,
"Saint Patrick drove the snakes from Ireland,
As serpent symbols were early worshipped by pagans,
So, upon encountering the Druids at Tara,
It gave chance for Patrick’s true conversion hour,
And the Baptism of Druids there in "Holy Wells"
Gave way to March seventeen as the day to retell
All-world of a cherished and hallowed sanctity,
Introduced to Ireland as Christianity." JM