DUBLIN, IRELAND - MARCH 17: Revellers attend the Saint Patrick's Day parade on March 17, 2019 in Dublin, Ireland. Saint Patrick, the patron saint of Ireland is celebrated around the world on St. Patrick's Day. According to legend Saint Patrick used the three-leaved shamrock to explain the Holy Trinity to Irish pagans in the 5th-century after becoming a Christian missionary.

We celebrate it every year, but how much do we really know about the holiday & Irish heritage? Put your knowledge to the test and see how much you know!