Seothín Seo hó in Amhráin Mhuighe Seola talks about faeries. i could post the song with its translation later, when I have time.
Also Úr-Chill An Chreagán found in the book, An Duanaire.
There's also a stange song in Sean O Boyle's book The Irish Song Tradition called Maighre An Chúl Órbhuí

I could post any of them later if anyone is interested.

Brían