The duke contrived to send to Rob Roy a letter, by a messenger, who found him either in or near his miserable hiding-place. This missive contained a pressing invitation to see him immediately at the castle of Blair, and offered horses for his conveyance there.

It was now the summer of 1717.

Although Rob Roy had every reason to believe that Athole, from the similarity of their political views had no personal animosity to him, he would not fail to remember, that he had at one time leagued himself with the Whig faction, and had taken from the English ministry the sum of a thousand pounds for his signature to the treaty of Union, ten years ago, though he had publicly opposed it in all its stages in Parliament.

So MacGregor was too wary to trust himself in such slippery hands without some firm assurance of safety. He, therefore, wrote to the duke, delicately hinting the want of confidence he now felt in most men; the desperation of his circumstances, the condition of his homeless wife and children, and wishing to have his grace's commands in writing.

In reply, the wily duke "gave him the most solemn promises of protection, adding, that he only wished to have some private conversation with him on certain political points. This was followed by an emissary, who gave even more positive assurances that no evil was intended, and then handed him a protection from Government. On seeing this our hero consented, and fixed a time for being at the duke's residence."

Accompanied by MacAleister, he duly appeared on a day in July at the castle of Blair, in a chamber of which the duke had treacherously concealed an officer and sixty soldiers.

The castle is a baronial edifice of great extent and unknown antiquity; one portion of it is still named the Comyns Tower, from John of Strathbolgie, who built it, and it has stood many a siege in the stormy times of old. A forest of splendid trees and a vast expanse of beautiful scenery are around it.

The wandering life led by MacGregor had now imparted somewhat of wildness to the aspect and costume of his henchman and himself.

His eyes were sunken and had become keen and fierce, as those of one who in every sound, even to the rustle of a dry leaf, heard the tread of an enemy. Long untrimmed and unshorn, his hair and curly beard waved in masses about his weatherbeaten face. His red tartans, every thread of which had been spun by Helen's hands, her labour of love, were worn and frittered. His coat was made of coarse homespun black and white wool in its natural state, just as it came from the sheep's back, with two rows of large wooden buttons; and he wore a red woollen shirt, for the Highlanders still disdained linen and cotton as effeminate.

He had an eagle's feather and a sprig of pine in his bonnet; his target, battered and dinted by many a blade and bullet, was slung on his left shoulder, and he had as usual his sword, dirk, and pistols, when, all unconscious of the wicked snare that was laid for him, he and his follower presented themselves at the splendid residence of the Duke of Athole.