My guess is that it is in Gaelic. I found it on this website and even the website is in Gaelic.
City-Data is an international forum and there may well be members from Ireland.
But, take heart - the website does offer language lessons, too!
Cré na Cille - Máirtín Ó Cadhain
(http://www.cic.ie/product.asp?idproduct=1049 - broken link)