Jim, Matt McGinn was a stalwart of folk music. Though most of his work is original, there is some debate over the tune used for this song. Lucille has got bugger all to do with it. This is a folk music site where the origins of tunes come up quite often. The MCPS/PRS now seem to have the tune down of red yo yo, as being trad. with the words being McGinn's, So what is the tune it's supposedly derived from, or are they actually wrong? The first releases just have McGinn's name and no mention of trad. but the last few decades of releases that the MCPS?PRS have state Trad./McGinn crediting the tune as trad, but why? And if correct what was the original source. Kenneth McKellar would likely have known of Matt McGinn's song, so it's not some tenuous cross cultural linking of vaguely similar works from different countries or times. McKellar himself though often thought of as a stuffy opera type and formal baritone Scottish singer, was actually a humourist who occasionally wrote sketches. It seems likely he based his work on the NcGinn tune.