When it comes to Saint Patrick, the true story is even more exciting than the legend and the myth. The facts are far better than the fable. This day that belongs to St. Patrick has become about leprechauns, shamrocks, pots of gold, and green—green everywhere. Famously, the City of Chicago dumps forty pounds of its top-secret dye into the river. A green racing stripe courses through the city. But long before there was the St. Patrick of myth, there was the Patrick of history. Who was Patrick?
Source: Who Was Saint Patrick and Should Christians Celebrate St. Patrick’s Day?