Robin Oig served for a time in the 42d regiment, and was present at the battle of Fontenoy, where he was made prisoner and wounded. He was exchanged, returned to Scotland, and obtained his discharge. He afterwards appeared openly in the MacGregor's country; and, notwithstanding his outlawry, married a daughter of Graham of Drunkie, a gentleman of some property. His wife died a few years afterwards.

The insurrection of 1745 soon afterwards called the MacGregors to arms. Robert MacGregor of Glencarnoch, generally regarded as the chief of the whole name, and grandfather of Sir John, whom the clan received in that character, raised a MacGregor regiment, with which he joined the standard of the Chevalier. The race of Ciar Mhor, however, affecting independence, and commanded by Glengyle and his cousin James Roy MacGregor, did not join this kindred corps, but united themselves to the levies of the titular Duke of Perth, until William MacGregor Drummond of Bolhaldie, whom they regarded as head of their branch, of Clan Alpine, should come over from France. To cement the union after the Highland fashion, James laid down the name of Campbell, and assumed that of Drummond, in compliment to Lord Perth. He was also called James Roy, after his father, and James Mhor, or Big James, from his height. His corps, the relics of his father Rob's band, behaved with great activity; with only twelve men he succeeded in surprising and burning, for the second time, the fort at Inversnaid, constructed for the express purpose of bridling the country of the MacGregors.

What rank or command James MacGregor had, is uncertain. He calls himself Major; and Chevalier Johnstone calls him Captain. He must have held rank under Ghlune Dhu, his kinsman, but his active and audacious character placed him above the rest of his brethren. Many of his followers were unarmed; he supplied the want of guns and swords with scythe-blades set straight upon their handles.

At the battle of Prestonpans, James Roy distinguished himself. "His company," says Chevalier Johnstone, "did great execution with their scythes." They cut the legs of the horses in two--the riders through the middle of their bodies. MacGregor was brave and intrepid, but at the same time, somewhat whimsical and singular. When advancing to the charge with his company, he received five wounds, two of them from balls that pierced his body through and through. Stretched on the ground, with his head resting on his hand, he called out loudly to the Highlanders of his company, "My lads, I am not dead. By G--, I shall see if any of you does not do his duty." The victory, as is well known, was instantly obtained.

In some curious letters of James Roy,* it appears that his thigh-bone was broken on this occasion, and that he, nevertheless, rejoined the army with six companies, and was present at the battle of Culloden.

* Published in Blackwood's Magazine, vol. ii. p. 228.

After that defeat, the clan MacGregor kept together in a body, and did not disperse till they had returned into their own country. They brought James Roy with them in a litter; and, without being particularly molested, he was permitted to reside in the MacGregor's country along with his brothers.