Hello,
I am interested in such a lovely song. I know it from many sides ... from Clannad (Siobhan Ni Dhuibhir), Alan Stivel (as Suzy McGuire) from Patrick Ball (as Susie McGuire) and from Norland Wind as Siabhan Ni Dhuibhir. I hope that ... it was all names, this song can have :-)
Tune is very easy and even I am not very handy of catching tune by ear, I got it during few minutes, so I am able to play it as simple slowly air.
But it is also great song to sing. One problem is that it has only irish lyrics. Even I tried hard, I nearly break my tongue. I can sing it as I catch it by ear and dont care, because in my country only few knows irish languge ... but I dont want to sing it that way. I am too true, to try this. Dont care to sing in spanish, french or even elvish ... but irish is for me too difficult. Does exist some english version?
I found that this song is very rare to find on internet, even it is well known and even if you dont know name, you surely heard it somewhere.