Religion in the Republic of Ireland
The predominant religion in the Republic of Ireland is Christianity, with the largest church being the Roman Catholic Church. The Irish constitution says that the state may not endorse any particular religion and guarantees freedom of religion.
Republic of Ireland
Ireland's patron saints are Saint Patrick, Saint Bridget and Saint Columba. Saint Patrick is the only one commonly recognised as the patron saint. Saint Patrick's Day is celebrated on 17 March in Ireland and abroad as the Irish national day, with parades and other celebrations.