Ireland - Wikipedia
en.wikipedia.org › wiki › IrelandIreland's largest religious group is Christianity. The largest denomination is Roman Catholicism, representing over 73% for the island (and about 87% of the Republic of Ireland). Most of the rest of the population adhere to one of the various Protestant denominations (about 48% of Northern Ireland). The largest is the Anglican Church of Ireland.
Ireland - Wikipedia
https://en.wikipedia.org/wiki/IrelandPeople have lived in Ireland for over 9,000 years. Early historical and genealogical records note the existence of major groups such as the Cruthin, Corcu Loígde, Dál Riata, Dáirine, Deirgtine, Delbhna, Érainn, Laigin, Ulaid. Later major groups included the Connachta, Ciannachta, Eóganachta. Smaller groups included the aithechthúatha (see Attacotti), Cálraighe, Cíarraige, Conmaicne, Dart…