Firstly a disclaimer. I don't wish to add confusion to your studies. I am certainly no expert on this or any other folk song.

1) I see no mention of the gob music/as she landed addition to the song that I have often heard added to Irish version

2) I think many singers have been influenced by the vaiant of this that Christy Moore sings - I don't know the precise sources for Christy's version.

apologies in advance if i am talking shite.