Clan Colquhoun ( ) is a Highland Scottish clan. History Origins of the clan The lands of the clan Colquhoun are on the shores of Loch Lomond. During the reign of Alexander II, Umphredus de Kilpatrick received from Malduin, Earl of Lennox, the estates of Colquhoun, Auchentorily and Dumbuck. The clan chief's early stronghold was at Dunglass Castle, which is perched on a rocky promontory by the River Clyde. Dunglass was also close to the royal Dumbarton Castle, of which later Colquhoun chiefs were appointed governors and keepers. The chief's title was that of the Barony of Luss which came to the clan when Sir Robert of Colquhoun married the heiress of the Lord of Luss in about 1368. 15th and 16th centuries During the minority of James II of Scotland, Sir John Colquhoun was appointed governor of the royal Dumbarton Castle. However he was murdered during a raid at Inchmurrin in 1439. He was succeeded by his son, another Sir John, who rose to be Comptroller of the Royal Household. He received a charter incorporating all of his lands into the free barony of Luss in 1457. A year later he also received the forests of Rossdhu and Glenmachome together with the lands of Kilmardinny. In 1474 Sir John Colquhoun was part of an embassy to Edward IV of England which was to negotiate the marriage between Edward's daughter, Cecilia and the infant James IV of Scotland. Sir John fought at the siege of Dunbar Castle which was being held by rebels and there he was killed by a cannonball. The clan Colqhuhoun also controlled Camstradden Castle that had been acquired by a younger son of Luss in 1395. The sixth Colquhoun Laird of Camstradden was a renowned knight and in 1547 fought at the Battle of Pinkie Cleugh. 17th century Colquhoun lands were particularly vulnerable to raids due to their strategic nature. In 1603 Alasdair MacGregor marched into Colquhoun territory with a force of over four hundred MacGregor clansmen. The chief of clan Colquhoun had been granted a royal commission to suppress the MacGregors. He assembled a force of five hundred foot and three hundred horse and advanced to Glen Fruin to repel the Highland raiders. MacGregor split his force in two and while the main force and the Colquhouns engaged in combat the second MacGregor force attacked from the rear. The Colquhouns were driven into the Moss