I heard Ron's version ( Ron Akehurst) a couple of weeks ago. The Melody is the one in the film (FFTMC) and the words are very similiar to the ones on Mudcat which makes me think that some "folk" process has taken place. However we did discuss the origins of the song and he seemed convinced that it had been a deliberately ambiguous Jacobite song that had been turned into purely a love song by the "folk" process. My gut feeling is that there has probably been more scholarly work done on this and Ron's recollections may not be accurate. I think we will work on the ambiguity of the song as Ron sings it authentic or not, it adds a little intrigue