I suppose you mean the pub was called An Droighnean Donn, because those aren't the lyrics to An Droighnean Donn.

should be "trí na fuinneoga..." and "Nuair a chloisim callán na n-inneall"

but I can't listen to the air and I don't recognise the lyrics though I'm reminded of a Sean O hÉiniú song with words "siar ar m'oige, siar ar na laethe a bhí"

Have you tried posting on an Irish language forum?