St. Patrick is the patron saint of Ireland, born in Britain during the 4th century. He was kidnapped and enslaved by Irish raiders as a teenager, but was able to escape after six years and returned to Britain to become a priest. He later embarked on missionary work in Ireland. According to Irish myth, he used a shamrock to explain the Christian concept of the holy Trinity. Despite opposition, he continued to evangelize for the next thirty years baptizing newly converted Christians and establishing monasteries, churches, and schools. He was canonized following his death on March 17th.

St. Patrick's Day was first publicly celebrated in Boston in 1773 where a large population of Irish immigrants resided. While it is still observed as a religious day, it has slowly evolved into a celebration of Irish heritage. As the years went on, along with the well-known shamrock, many symbols have been integrated into the festivities, reflecting Ireland's folklore, culture, and national identity.   

More information and fun facts on this holiday can be viewed here!