Cúnnla is one of those rare beasts; a macaronic song i.e. in more than one language, in this case Irish and English. There is a superb version of it by Seosamh Ó hÉanaí and Séamus Ennis on the RTE CD Amhráin ar an Sean-Nós.
The Topic/Musical Traditions CD of Joe Heaney (Seosamh Ó hÉanaí) The Road From Connemara TSCD518D gives the bilingual text which I'll try to copy and post later.