My original included the verse about Paddy hitting the barrel on
the way back down, when Sean recorded the song with the Dubliners
he missed out this verse, therefore all those who learnt the song
from the Dubliners singing did the same.
Sean has recently re- recorded the song including the missing verse.
Noel Murphy sang the full song as I wrote the words down for him,
and the Corries later learnt the song from Murphy's version, many
other recordings have slight variations including most notably the
numerous different titles.
All the best,