Many thanks, Jim Carroll, especially for the references! Have just pulled up, online, "Poets and Poetry of Munster" edited by Sigerson. Let me see if I can use computer code to work this out from the script. This version has more than four verses, AND I see individual lines wiggling around and jumping from verse to verse....this is a lively traditional lyric in that respect, alive and kicking! Here goes.

CAISLEÁN UÍ NÉILL
(traditional. Editor: Sigerson, Poets and Poetry of Munster)

(given as verse 4 in Sigerson; corresponds closely to verse 1 in previous posts on this thread)
Cé slán do'n oidhche raoir is é mo léan nach í nocht atá ann
'S do'n m-buachaillín spéireamhuil do bhreagfadh mé seal ar a ghlúin
Do 'neósfainn féin sgéal duit dá m'fhéidir go g-coimeádfádh orm rún!
Go bh-fuil mo ghrádh bán am thréigion a Dhia ghléigil 'sa mhic Mhuire nach dúbhach!

(shouldn't complain, but wow, this is a workout.)