Irish civil registrations began in 1864 for births, deaths, and Catholic marriages. Non-Catholic marriages started in 1845. You’ll need to know the parish for birth records prior to 1864.
The web of our life is of a mingled yarn, good and ill together. – William Shakespeare
Ann Cushman provides a marvelous resource of odds and ends and tidbits and stuff from the unusual to the amusing. In between, you might find a clue or a new source of information to aid your research.