Before revision: Glen Coe, Argyll Glencortas, Fife - from Gaelic gleann + possibly coirthe ("standing stone") + as (locational suffix).
After revision: Glencairn, DumfriesshireGlen Coe, Argyll Glencortas, Fife - from Gaelic gleann + possibly coirthe ("standing stone") + as (locational suffix).