Hi Eileen, I think my g uncle would have been much older than your Thomas... He would have been born at least by 1860 or earlier.. his parents and sibling emigrated to America in 1871.. for some reason he stayed behind. we don't know his date of birth or where he, or any of the family was born.for sure. Some said Wicklow, some said Carlow, and my grandmother , one of the children. said she was from Co Cork.. do you know the names of the parents of your Thomas Byrne? Maybe he is the son of my Great Uncle? who knows... good luck with you quest..