Portlethen Village is situated slightly to the east of the ancient Causey Mounth trackway, which road was constructed to make passable this only available medieval route from coastal points south from Stonehaven north to Aberdeen.
[2] The route was that taken by William Keith, 7th Earl Marischal and the Marquess of Montrose when they led a Covenanter army of 9000 men in the battle of the Civil War in 1639.
[3] For centuries prior to the collapse of local marine fisheries in the 1900s, Portlethen Village derived its livelihood from use of small oceangoing wooden boats in pursuit of North Sea fish.
It has been noted that Portlethen Village once had a castle nearby similar to the one at Muchalls.
The castle was built by Robert Buchan, who owned the estate of Portlethen in the 17th century.