Keith Norman MacDonald (The Gesto Collection of Highland Music, 1895) prints a set of Hi Oro 'S Na Horo Eile, with two variants of the tune.  With the first he gives, beside John MacLean's Gaelic, the text of Burns' Ae Fond Kiss.  Ossian recorded the song with that melody, though they finished on a rather than f (as in your example, given that mine is in f and yours in c), giving it a more melancholy feel.  Donal Óg is sung to a variant of the same tune.

Click Here  for a midi of the tune as printed in Gesto: see what you think.