KILKELLY IRELAND music video : Irish folk music, ballad

This is the tale of an Irishman who emigrated to the USA and never saw his family again. A series of letters was discovered, his mother's correspondence to her son in America, and the letters are set to verse and create a heart-felt, melancholy, chronological story. I am not sure who sings this: Mike Moloney? Robbie O'Connell? Sean Keane?