He was too old to share personally in the Jacobite rising of 1715, but his sympathies were with the Stuarts, and his son led the Camerons at Sheriffmuir.
Montrose arrived a day too late for Marston Moor (2nd of July 1644); Rupert took his contingent; he entered Scotland in disguise, met the ill-armed Irish levies under Colkitto, raised the Gordons and Ogilvies, who supplied his cavalry, raised the fighting Macdonalds, Camerons and Macleans; in six pitched battles he routed Argyll and all the Covenanting warriors of Scotland, and then, deserted by Colkitto and the Gordons, and surprised by Leslie's cavalry withdrawn from England, was defeated at Philiphaugh near Selkirk, while men and women of his Irish contingent were shot or hanged months after the battle.
Here for the first time the highlanders were under heavy fire of grape and roundshot, to which they could not reply, and though the right wing and centre, Camerons, Atholl men, Macleans, Clan Chattan, Appin Stewarts, under Lord George and Lochiel, fought with even more than their usual gallantry and resolution, the Macdonalds on the left, discouraged by the death of Keppoch, Scotus and other officers in the advance, never came to the shock.
The names are diversely given, but probably the combat was only one incident in the long wars of the Camerons with the great Clan Chattan confederacy.
They aggrandized themselves at the expense of the Macleans, Macdonalds, Camerons and Clan Chattan, but their sway was far from being peaceful and orderly.