Yes, lots of people sing the parodies. They are amusing to begin with, but like most parodies tend to wear thin with repetition. The other discussions here of the song concentrate on those parodies, indeed, and maybe they would better be discussed there; there is more about them here than there is about the original song, which is rather a pity.

Having said that, the Rusby/Roberts arrangement, though pretty, is itself hardly representative. As 'domo' says, it's been turned into a nice little acoustic pop song. I suppose that it may have started out as the O Lochlainn version, but it's more likely to have been based on one of the examples found in English tradition in the early years of the 20th century. I don't have time at the moment to do a tune comparison in order to find out, or to check the fansite transcription Joe has posted.

At all events, the girls probably won't have known: they weren't that far into their teens when they recorded it, and they got most of their songs off records in their parents' collections made by the previous generation of folk club singers (which explains the high proportion of Nic Jones covers on Kate's early records). At the time, they showed no particular interest in where the songs they arranged came from; it's later in life, as a rule, that you start to want a bit more depth.