Unfortunately, I don't know very much more about this song.
I think the refrain goes something like this: seothin seo h-o
lú lú ló ló
seothin seo h-o
lú lú ló ló
and I belive it's two verses. As I wrote I think the second vers starts with : Huise mo mhile mhile grá
I was thinking of combine it with a traditional Norwegian lullaby, and I thought it was a very nice tune.
Thanks for trying to help me Áine and Philippa!
Angun