I recently came across this note inserted into the Ordnance Survey Name Books for the Parish of Kilmallie:
Shakespeare in all probability heard the Gaelic traditions about Banquo Thane of Lochaber. There is a song by John MacDonald (Iain Lòm) who lived in the reigns of Charles I and II speaking of the Stewart Kings and of the ‘True Face[?] of Banquo’.
16th Aug. 1872
You can see a lot of these names at NN133787 on an Explorer Map. Between the place-names and the magic this is a fasinating note that deserves to see the light of day.