St. Patrick's day is an interesting holiday that now a days most people only think of it as the day you get pinched if you're not wearing green. The history of this holiday is actually quite different and in it a young boy named Patrick was taken by pirates in Britan and sold into slavery in Ireland. (the holiday spot) After he escaped he thought it was through the power of god that he was able to get to a getaway ship.(the holiday spot) He later studied about the Christian religion and went back to Ireland and converted many to Christianity. The legend also states that he used the shamrock to help with his teachings providing the association with the plant and St. Patricks day. Overall this is what i found on the history of St. Patricks day.

-By Braxton Dunbar

Source;
http://www.theholidayspot.com/patrick/historyofpatrick.htm