clm - great query. There are several good sites on the web devoted to James Joyce. If you don't get an answer here, you might check some of them. As you are obviously aware, there are couplets from many songs scattered all through "Ulysses." An interesting fact about JJ is that he was a talented tenor. He lost a competition to John McCormack not for vocal ability, but because McCormack could sight-read and JJ could not. There is presently a library of Irish traditional music up around Merrion Square in Dublin, but I don't know if it was there in Joyce's time, and I don't know whether it includes both trad (instrumental) and vocal (folk songs). Having been raised in a strongly nationalist home, Joyce seemes to have acquired a strong admiration of Parnell. There are bits and pieces of many old rebel songs scattered through "Ulysses". At one point, Joyce even quotes Randolph Churchill, though it isn't identified thusly.