Actually, the melody and arrangement are by Sean Tyrell, an Irish singer and tenor guitarist who recently toured with Paddy Keenan.

He also wrote the song that gave Davy Spillane's "Shadow Hunter" album its name: "Walker of the Snow" which is one of the greatest ghost story songs ever - absolutely hair-raising. Sean released a new CD last year, I think it's called "The Orchard"(?)

Cheers,
Michael