Oh, by the way, the words " Is Gra Geal Mo Croi Hu, Tir Conaill A stor" mean "You are the bright love of my heart, darling land of Conall". (Tir Conaill or Tirconnell is often used to mean the county of Donegal; in this song I think the writer is distinguishing between the county and its capital, the town also called Donegal.)