For those looking up old maps, Knocknaboul may or may not be present in it's Irish form, Cnoc na mBall, "the hill from where many places can be seen". It has not been mentioned so far that this song is a localised version of "Dear Old Wexford Town" which begins
My bonny barque bounds light and free across the ocean foam
It bears me far from Inisfail to seek a distant home
A lonely exile driven neath misfortunes coldest frown
From my loved home and cherished friends
And Dear Old Wexford Town.
For a fuller version, see www.tbrowne.net/stories in song.
Tim Browne published a book called "Stories in Song Vol 1," a miscellany of Songs, Lyrics and anecdotes from the Barony of Duhallow
in 2007 and is well worth seeking out.