"Presented by Bunting as an "Ossianic air", collected on the shores of Antrim (the crossing point towards MacPherson’s country), in Murlough, not far from the so called Ossian grave."
You can check out this tune & loads more like it, on the ‘Ancient Music of Ireland’ website:
At the ‘Fiddler’s Companion, they have this to say about it:
"BATTLE OF ARGAN MORE, THE. AKA - "Argan Mor." Irish, March or Air (4/4 time). D Dorian (?). Standard. One part. A pentatonic tune. Source for notated version: the Irish collector Edward Bunting’s MS notes indicate he was given the melody by "a Cushendall man in 1809, tenant to Dr. McDonnell." O’Sullivan/Bunting, 1983; No. 155, pg. 212. RCA 09026-61490-2, The Chieftains - "The Celtic Harp" (1993)."