This jig was written by Pipe Major Donald MacLeod, MBE (1917-1982), born on the Isle of Lewis.
Other MacLeod's tunes are displayed on my website : The Hen's March, The Seagull and the hornpipe Dr. MacInnes's Fancy.
NB : as for the Reels, there are many tempi to play a jig, ranged from about 120 to 136 (even 142 as on the video below), according to the piper or his audience (dancers or listeners).
The tune is of course essential for choosing a beat. That being said, tempi under 130 are often a good option to preserve all the musicality and the grace notes clarity.
The jigs submitted here follow usually a tempo of 122 BPM for being played together during my show : that is of course only an indicative beat, as a working base.