DonM., I believe the first version I learned had "Colonel Pepper", but now I sing "Captain Farrell", just because it sings better, I find. I've never hear "Willie Farrell".

Also, some versions have "Molly" rather than "Sportin' Jenny". The latter rhymes with some other stuff, so I use it in my version.

Some versions have "the football and the bowling". I understand that in Northern Ireland hurling (or "hurley") is the Catholic sport, football (soccer, not rugby, Canadian or American football) is the Protestant sport. (This was in an article explaining why the Belfast hockey team in the U.K. league is well supported -- it's a non-sectarian sport.) So I'm speculating that the versions with "football" are Northern Protestant.