St. Patrick's Day, some history

Much Irish folklore surrounds St. Patrick's Day.Some of this lore includes the belief that Patrick raised people from the dead.
[2]He also is said to have given a sermon from a hilltop that drove all the snakes from Ireland, although paleontologists have pointed out that no snakes were ever native to Ireland.
[3] (In response, some scholars say the snake story was an allegory for the conversion of the pagans.) Though originally a Catholic holy day, St. Patrick's Day has evolved into more of a secular holiday.One traditional icon of the day is the shamrock. This stems from a more bona fide Irish tale that tells how Patrick used the three-leafed shamrock to explain the Trinity. He used it in his sermons to represent how the Father, the Son, and the Holy Spirit could all exist as separate elements of the same entity. His followers adopted the custom of wearing a shamrock on his feast day.
[citation needed] The St. Patrick's Day custom came to America in 1737, the first year St. Patrick's Day was publicly celebrated, in Boston, Massachusetts.

Today, people celebrate the day with parades, wearing green, and drinking beer.