Who cares anyway? If the song's good, that is all that matters. Is a song written in Ireland by and Englishman, but using Irish 'idiom' Irish? Or one written in England by a second generation irish etc etc etc. It doesn't matter. Personally I love Irish songs. I love English songs. I love Scottish songs. I love Geordie songs. In fact I love any song that appeals to me. I know it is law, but I don't agree with copywright. Songs are about communicating and shouldn't have strings attached.