THIS clan claim descent from Gregor, a son of King Alpin, who ruled about 787. They had great possessions in Perthshire and Argyllshire. They held their lands by the sword, fighting bravely for their homes, and gave their enemies such good excuse to urge their dispossession that their name was suppressed by Parliament. In the thirteenth century they held the lands of Glenorchy. Later they appear as tenants of the Campbells. Patrick, who succeeded in 1390, had two younger sons John Dhu MacGregor of Glenstrae; and Gregor MacGregor of Roro, in Glenlyon. Ultimately the chieftainship went to the Glenstrae branch. In 1502 the line of Roro was dispossessed by the Campbells. In 1603 the MacGregors overthrew their oppressors, the Colquhouns of Luss, at Glenfruin, For this they were outlawed, and their Chief, Alexander MacGregor, with many of his followers, was executed in Edinburgh in 1604 ; but as late as 1744 MacGregor of Glengyle drew blackmail on the Highland Borders. The suppression of the name was annulled by Parliament in 1774. Rob Roy was of the House of Glengyle. Scott proved that the MacGregors were the real “Children of the Mist.” MacGregor of MacGregor and Balquhidder, whose line holds a Baronetcy, has been officially recognised as Chief of the clan.
THE name Campbell first appears in 1216, in connection with a proprietor of lands in Stirling; but the first of importance was Neil Campbell, who, in 1296, was made King Edward’s Baillie over lands in Argyll. His great-grandson was created Lord Campbell by James II, and was the first of the family to take the title of Argyll. His grandson, Colin, was made Earl of Argyll in 1457, and Baron of Lorn in 1470. The Marquis of Argyll was the great leader of the Covenanters during the Civil Wars in the reigns of Charles I and Charles II. The 8th Earl was created Duke of Argyll in 1701. The Peerages and estate descended to John, second Duke of Argyll and Earl of Greenwich (died 1743). He was succeeded by his brother, who died without issue, and so the title devolved upon his cousin, General John Campbell of Mamore. Inveraray Castle is the seat of the Campbell Chiefs, whose designation is MacCailein Mhor.