That'll be Margaret Barry, a well-known traditional singer who died some years ago. She was a member of what is now termed the "traveller" community in Ireland - formerly called itinerant, tinker and a lot more besides, I'm afraid. I don't know the song, off hand. Mind you, I'd be surprised if Tommy couldn't lay hold of a copy. You might suggest he try the irish Traditional Music Archive in Dublin - or perhps John Moulden.

Regards