At the Sunnyside Singers (in Queens, New York) there is an Irish fellow named Martin Daly who does a lovely version of this song, accompanying himself on the guitar. It's the version I'm most familiar with, and, of course, I've forgotten who Martin told me he got it from. (I believe it was Jimmy something-or-other, but I just can't recall anything more.)
Next time I see Martin I'll have to remind myself to ask him for the details.