Religion in the Republic of Ireland
Christianity is the largest religion in the Republic of Ireland based on baptisms. Irish Christianity is dominated by the Catholic Church, and Christianity as a whole accounts for 82.3% of the Irish population. Most churches are organized on an all-Ireland basis which includes both Northern Ireland and the Republic of Ireland.
Irish travellers have traditionally adopted a very particular attitude to the Catholic Church, with a focus on figures such as "healing priests". More generally a tradition of visions continues, often outside of Church sanction.
Normans in Ireland
There was no religious division in medieval Ireland, beyond the requirement that English-born prelates should run the Irish church. After the Henrician Reformation of the 1530s, however, most of the pre-16th century inhabitants of Ireland continued their allegiance to Roman Catholicism, even after the establishment of the Anglican Church in England, and its Irish counterpart, the Church of Ireland.