... well I did say there had been a little discussion on the song here at Mudcat; the link didn;t lead too far!
I would appreciate hearing if/how the song links back to an older Irish song. I guess I wouldn't be surprised; in fact, I'm sure I've heard that comment before.
It's funny, you say it wasn't requested much. I have played that song for years, and although people always seem to respond, and enjoy the song; I've had very few requests for it over the years - and most of those from my musicican friends. It appears that maybe it is a musician's song!