Kathleen,
w.r.t. the father of Nathaniel Currie, b. 1790 Armagh, I had guessed at his first name from several sources and put it my tree. This was sent to a relative, but all of a sudden, it is all over the web. Lots of luck for confidentiality.
Do you have any more information about "Saltcoats, north Ayrshire". I have been concentrating on Kirkbean, since there are four different Nathaniel Corries that have the correct age to be the immigrant to Belfast. And there are a number of other Nathaniel Corries from there.
w.r.t. the religion of Nathaniel Currie, b. 1790 Armagh, a history of Glencoe notes that he belonged to the Church of England/Anglican Church, while his wife was a Wesleyan Methodist (the latter has persisted down to the present). A Canadian house census in 1881 indicated that his son (Nathaniel) was in the Church of England while his wife was E. Methodist.
Kathleen, good to hear from you again.
Doug