St. Patrick's Day is celebrated in many areas of Tasmania due to so 
many past and present immigrants from Ireland including many of my 
ancestors at the time of the potato famine in Ireland. 
Little
 is known of Patrick's early life, though it is known that he 
was born in Roman Britain in the fourth century, into a wealthy 
Romano-British family. His father was a deacon and his grandfather was a
 priest in the Christian church. At the age of sixteen, he was kidnapped
 by Irish raiders and taken captive to Ireland as a slave.  It is 
believed he was held somewhere on the west coast of Ireland, 
possibly Mayo, but the exact location is unknown. According to his 
Confession, he was told by God in a dream to flee from captivity to the 
coast, where he would board a ship and return to Britain. Upon 
returning, he quickly joined the Church in Auxerre in Gaul and studied 
to become a priest.
According to legend, Saint Patrick used the three-leaved shamrock to explain the Holy Trinity to Irish pagans.
In
 432, he again said that he was called back to Ireland, though as a 
bishop, to Christianize the Irish from their native polytheism. Irish 
folklore tells that one of his teaching methods included using the 
shamrock to explain the Christian doctrine of the Trinity to the Irish 
people. After nearly thirty years of evangelism,
 he died on 17 March 461, and according to tradition, was buried at 
Downpatrick. Although there were other more successful missions to 
Ireland from Rome, Patrick endured as the principal champion of Irish 
Christianity and is held in esteem in the Irish church.
Just a little something I made that happens to be of Irish Origin.