The lands of the Colquhouns lie on the shores of Loch Lomond. The
name itself probably derived from the Gaelic ‘cuil chumhann’ – ‘narrow
corner’. Umphredus de Kilpatrick received from Malduin, Earl
of Lennox, the estates of Auchentorily, Dumbuck and Colquhoun during
the reign of Alexander II. The chief’s early stronghold was
Dunglas Castle, near the royal castle of Dumbarton. Later chiefs
of Colquhoun were to be appointed governors and keepers of Dumbarton
Castle.