The fine old satirical ballad on the battle of Sheriffmuir does not forget to stigmatise our hero's conduct on this memorable occasion--

Notwithstanding the sort of neutrality which Rob Roy had continued to observe during the progress of the Rebellion, he did not escape some of its penalties. He was included in the act of attainder, and the house in Breadalbane, which was his place of retreat, was burned by General Lord Cadogan, when, after the conclusion of the insurrection, he marched through the Highlands to disarm and punish the offending clans. But upon going to Inverary with about forty or fifty of his followers, Rob obtained favour, by an apparent surrender of their arms to Colonel Patrick Campbell of Finnah, who furnished them and their leader with protections under his hand. Being thus in a great measure secured from the resentment of government, Rob Roy established his residence at Craig-Royston, near Loch Lomond, in the midst of his own kinsmen, and lost no time in resuming his private quarrel with the Duke of Montrose. For this purpose he soon got on foot as many men, and well armed too, as he had yet commanded. He never stirred without a body-guard of ten or twelve picked followers, and without much effort could increase them to fifty or sixty.

The Duke was not wanting in efforts to destroy this troublesome adversary. His Grace applied to General Carpenter, commanding the forces in Scotland, and by his orders three parties of soldiers were directed from the three different points of Glasgow, Stirling, and Finlarig near Killin. Mr. Graham of Killearn, the Duke of Montrose's relation and factor, Sheriff-depute also of Dumbartonshire, accompanied the troops, that they might act under the civil authority, and have the assistance of a trusty guide well acquainted with the hills. It was the object of these several columns to arrive about the same time in the neighbourhood of Rob Roy's residence, and surprise him and his followers. But heavy rains, the difficulties of the country, and the good intelligence which the Outlaw was always supplied with, disappointed their well-concerted combination. The troops, finding the birds were flown, avenged themselves by destroying the nest. They burned Rob Roy's house,--though not with impunity; for the MacGregors, concealed among the thickets and cliffs, fired on them, and killed a grenadier.

Rob Roy avenged himself for the loss which he sustained on this occasion by an act of singular audacity. About the middle of November 1716, John Graham of Killearn, already mentioned as factor of the Montrose family, went to a place called Chapel Errock, where the tenants of the Duke were summoned to appear with their termly rents. They appeared accordingly, and the factor had received ready money to the amount of about L300, when Rob Roy entered the room at the head of an armed party. The Steward endeavoured to protect the Duke's property by throwing the books of accounts and money into a garret, trusting they might escape notice. But the experienced freebooter was not to be baffled where such a prize was at stake. He recovered the books and cash, placed himself calmly in the receipt of custom, examined the accounts, pocketed the money, and gave receipts on the Duke's part, saying he would hold reckoning with the Duke of Montrose out of the damages which he had sustained by his Grace's means, in which he included the losses he had suffered, as well by the burning of his house by General Cadogan, as by the later expedition against Craig-Royston. He then requested Mr. Graham to attend him; nor does it appear that he treated him with any personal violence, or even rudeness, although he informed him he regarded him as a hostage, and menaced rough usage in case he should be pursued, or in danger of being overtaken. Few more audacious feats have been performed. After some rapid changes of place (the fatigue attending which was the only annoyance that Mr. Graham seems to have complained of), he carried his prisoner to an island on Loch Katrine, and caused him to write to the Duke, to state that his ransom was fixed at L3400 merks, being the balance which MacGregor pretended remained due to him, after deducting all that he owed to the Duke of Montrose.