Looks like I'm up to speed with this song.
It seems that my singer has five verses from 'The courtship of William Reilly' and one verse from 'The trial'
It seems a lot less confused in this context. All oral texts available through 'The Full English' follow the Broadsheet texts which are a condensed version of the trial, and none I have found follow the Courtship verses. That does not mean there are not oral texts I have not found.
The difference between the printed source and Sam Gorman's is considerable. Usually this means Broadsheet re-writing, but since I cant find any reference to 'the courtship' from the broadsheet output, I'm beginning to wonder if I have a unique version.
I'm rather enjoying this song search, so if you can help please let me know.