PS - the "Glasgow Reel" title is a later, incorrect, addition. I believe the first ever recording of the tune would have been by Davey himself playing it on "Emigrant", a "Fureys and Davey Arthur" LP record released on the Polydor label in 1977.
Track # 5, where the title is "Tamalinn" [sic ].
I've just listened to his introduction, which I saved on a hard disc recorder. He says he wrote the tune when he was 20 years old, and that - quote : "it is the best known and certainly most recorded of my compositions to date".