Mary Black did the vocal on it on De Danann's album 'Song for Ireland,' Sugar Hill album SH-1130. I suspect she's done other recordings of it as well, but this is the one that immediately came to my mind.

And, Peg, you're right about at least the first lyric snippet you've given. I don't remember the others but it's been a while since I've given it a listen. One more reason to get on with my project of converting my vinyl collection to MP3's.