Sources

Carbisdale Castle ~ Caisteal Chàrbasdail

Battle of Carbisdale ~ Blàr Creag Chòinneachain
Latha Creag Choineachain: Am Fèillire, 1875, 6 [oddly, Latha Chorbiesdale 1650 is given for the 24th, with this dates the 27th.]

Lamentation Hill (O.S.M.) G. creag a’ chòinneachan, rock of the mossy place. Cf the continuation of the “History of the Earldom of Sutherland ” with reference to the defeat of Montrose, which took place here in 1650 : ‘This miraculous victorie hapned the twentie seaventh of Aprill one thousand six hundreth fiftie years at Craig-choynechan, besides Carbesdell.’ As this is a contemporary account, it effectually disposes of the popular notion, officially adopted on the O.S. Map as above, that the place meant Rock of Lamentation (Còineadh). The name was given long before the battle took place. : Watson 1904, 20

Carbisdale is by Creag a’ Choineachan (as it is on maps).

Creag Choinneachain: Robertson
Creag a’ Choinneachan: Watson in Dwelly

Dwelly gives còinneachan as ‘wild yellow bee’, or some sort of diminutive of còinneach, ‘moss’?