It's listed in "Ceol ár Sinsear" by An t-ath Breathnach - who published several books of songs in the first half of the last century. I don't think I have the book but may be able to get a look at a copy over the holiday period if nobody turns up the words.

Regards

p.s.Ó Ceallaigh published a setting in four parts - not sure if he composed the tune.