Canmore says:
‘...the name appears to have arisen from an old belief that the place was haunted by a ghost, and at this cairn St Knauchland conjured or subdued it. It is likewise known by the name of Devils Cairn.‘
Name Book 1867.
This grassy bump sits atop of Bo Hill. Beneath was alleged to be the kirk and holy well of St Knauchland (the most recent record on Canmore is most sceptical of both claims). It’s possible that ‘Knauchland’ is from St Nachlan, a saint renowned for his ability to grow crops when everyone else’s were failing.
You might also want to look out for the remains of ‘Kemp’s Cairn’, also close by. In 1745, a large cist was found at NJ 564514. It was said to be covered by a large stone. The farmer who was quizzed in the 1960s pointed out this reputed capstone, now built into a wall at NJ 5642 5141. “The stone is flat and measures 1.5m x 0.8m x 0.2m, being roughly rectangular.”
(this is not ‘strictly’ in Aberdeenshire, but in a tongue of Moray that sticks into it, so is surrounded by Aberdeenshire sites.)