Hi Vicki: If your relative was born from 1864 onwards, his birth should be in the Irish civil register of births. The indexes of these births are available on film from the Latter Day Saints, if you are near one of their libraries. The LDS has been transcribing the indexes so they can be made available online but I don't think they are ready yet. When you know the index (volume and page) of birth, you can order a birth certificate from the General Register Office of Ireland, for a fee. Good luck, Annie