links in this thread aren't working now
Peace's first link brought me to lyrics and tune of "the Banks of the Nile"

An bhfaca tú mo Shéamaisín is the song of the week in futurelearn course from Dublin City University, Irish 105. The information says that this song "was written by Na Casaidigh". Na Casaidigh recorded the song but I don't believe they wrote it. I am looking for evidence to back up my case(or to convince me otherwise)!