> Come By The Hills by Fureys and Davey ArthurIrish tune, Scottish words (by W. Gordon Smith). The Fureys may have recorded it but wrote none of it.
> The Parting Glass
17th century Scottish (Goodnight and Joy Be With You All)
> Wild Mountain Thyme sung by Connie Dover (that one might start an origins argument)
Which would be over rather fast on searching the archives here.
One lovely Irish tune I'm curious about: Apple Praties. It's in Kerr's collection of the 1880s; I don't think I've ever seen it anywhere else. It must be the tune for a song. Nobody but me seems to play it. Anyone here know anything about it?