https://books.google.ca/books?id=UTMhAQAAIAAJ&pg=PA294&lpg=PA294&dq=%22The+little+fly%22,+song+lyrics,+copyright&source=bl&ots=B

That link shows two copyrights for songs entitled 'The Little Fly'. As yet I have look on further into either song to see if the lyrics match those sung by Seamus Kennedy, et.al. They could be completely different song altogether. However, I will not put more time into it unless the OP returns and replies to the thread s/he started. No offence, but I've had too much of my time wasted digging for stuff no one really gives a rat's rear about.