The execution of those severe acts was chiefly intrusted in the west to the Earl of Argyle and the powerful clan of Campbell, and to the Earl of Athole and his followers in the more eastern Highlands of Perthshire. The MacGregors failed not to resist with the most determined courage; and many a valley in the West and North Highlands retains memory of the severe conflicts, in which the proscribed clan sometimes obtained transient advantages, and always sold their lives dearly. At length the pride of Allaster MacGregor, the chief of the clan, was so much lowered by the sufferings of his people, that he resolved to surrender himself to the Earl of Argyle, with his principal followers, on condition that they should be sent out of Scotland. If the unfortunate chief's own account be true, he had more reasons than one for expecting some favour from the Earl, who had in secret advised and encouraged him to many of the desperate actions for which he was now called to so severe a reckoning. But Argyle, as old Birrell expresses himself, kept a Highlandman's promise with them, fulfilling it to the ear, and breaking it to the sense. MacGregor was sent under a strong guard to the frontier of England, and being thus, in the literal sense, sent out of Scotland, Argyle was judged to have kept faith with him, though the same party which took him there brought him back to Edinburgh in custody. MacGregor of Glenstrae was tried before the Court of Justiciary, 20th January 1604, and found guilty. He appears to have been instantly conveyed from the bar to the gallows; for Birrell, of the same date, reports that he was hanged at the Cross, and, for distinction sake, was suspended higher by his own height than two of his kindred and friends. On the 18th of February following, more men of the MacGregors were executed, after a long imprisonment, and several others in the beginning of March. The Earl of Argyle's service, in conducting to the surrender of the insolent and wicked race and name of MacGregor, notorious common malefactors, and in the in-bringing of MacGregor, with a great many of the leading men of the clan, worthily executed to death for their offences, is thankfully acknowledged by an Act of Parliament, 1607, chap. 16, and rewarded with a grant of twenty chalders of victual out of the lands of Kintire.