I found the marriage of Alexander Dann and Mary Mathews m 1814 in Family Search. I knew m;y Alexander's father and mother were Alexander and Mary. My Alexander was born in Ireland in 1829. He also had a brother Richard, b 1832, a Thomas b 1834 and a Rachel b 1837
As Alexander Dann is not a common name in Ireland this is as close as I can get. I know he was as strict protestant as my gran told me he was an Orangeman. Over here he was a strict Primitive Methodist.
Without actually going to Ireland and looking through the Church records I don't know any other way to find the information as I don't think the censuses exist.
If there is anything I can do for you in England please let me know, also Australia and New Zealand, as I am going there.
Thank you for looking.
Beryl Clampton