As a bishop.
Pope Celestine I asked Patrick to return to Ireland as a missionary and bishop.
When St. Patrick first arrived in Ireland, he was a captive taken as a slave by Irish raiders. He eventually escaped and returned to his home in Britain, but later chose to return to Ireland to spread Christianity.
St. Patrick was not exactly exiled. He was asked by the pope to return to Ireland as a missionary. He went out of obedience which was required of his office as bishop.
National Day of Northern Ireland is St. Patrick's Day. St. Patrick's Day is celebrated in all of Ireland. It was to honor St. Patrick. He was the patron Saint of Ireland.
St Patrick was sold as a slave into Ireland.
He was a 16 year old slave.
St. Patrick spread the Catholic religion in Ireland.
After escaping his slavery in Ireland and studying for the priesthood in Europe, Patrick returned to Ireland as a priest, bishop and missionary in about AD432.
No. St. Patrick is famous for converting the people of Ireland to Christianity.
By his example and preaching St. Patrick converted much of Ireland to Christianity.
Green, which is the colour associated with Ireland. St. Patrick is Ireland's patron saint and St. Patrick's Day is Ireland's national holiday.