The only missionary that I know that went to Ireland was St. Patrick. Since that time, Ireland has usually send out missionaries to the rest of the world, not vice-versa.
Ireland is primarily Christian, specifically Roman Catholic, followed by Church of Ireland (Anglican). There are of course churches of various denominations throughout Ireland, but these are the two that are most popular. Mostly Catholic in the South. In Northern Ireland the majority of the population is Protestant. the religion in the republic is mainly catholic and in northern Ireland its catholic prodestant the dail is the name of the government buildings in dublin Ireland is a Christian Catholic country.
There are many Baptist churches in Ireland. Check the link below for more information.
Ireland is an almost 100% Catholic country where the Catholic Church still wields considerable influence which has only diminished somewhat in the wake of numerous sexual-abuse scandals by Irish Catholic bishops, nuns and priests. And a country where a church aims to strongly dominate everyday beliefs and values will want a lot of local churches from where parish priests can do the job.
It was brought to Ireland by St. Patrick in the 5th century. He and others helped spread it throughout Ireland. Ireland became a great centre for Catholicism with many churches and monasteries built around Ireland, that have become a part of Ireland's history and culture. Ireland was described as "The land of saints and scholars". It is still strong in Ireland today.
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I believe that there are 30 Catholic parishes (churches) in Rome, Italy. I did a search on Masstimes.org and it listed 30 in Rome.
No. Many Protestant and Orthodox churches also name their parishes for saints.
Wikipedia (at the link below) lists 90 active Catholic Churches in Venice, and an additional twelve on the Islands which are part of Venice.
Many of the people in Ireland are Catholic, but some are Protestant.
The Pope is the Spiritual Leader of all Catholics. The Archbishop of Armagh is the leader of the Catholic Church in Ireland. The Queen of England is Head of the Anglican Church, a Protestant Church, hence the Church of Ireland which is the main Protestant Church in Ireland. There are also other Protestant Churches, other Christian churches and other non-Christian faiths in Ireland, all of whom have leaders.
in the time of Patrick there was only one christian church - pre orthodox, reformation etc. today he is "claimed" by all christian churches as the patron saint and you will find as many protestant churches dedicated to him as catholic ones. in terms of Christianity, then, he helped spread its beliefs throughout the northern part of the Ireland in particular. he was not the first christian missionary. he himself said he was sent by the pope as a bishop to the christians of Ireland.