The parties met in the valley of Glenfruin, which signifies the Glen of Sorrow—-a name that seemed to anticipate the event of the day, which, fatal to the conquered party, was at least equally so to the victors, the "babe unborn" of Clan Alpine having reason to repent it. The MacGregors, somewhat discouraged by the appearance of a force much superior to their own, were cheered on to the attack by a Seer, or second-sighted person, who professed that he saw the shrouds of the dead wrapt around their principal opponents. The clan charged with great fury on the front of the enemy, while John MacGregor, with a strong party, made an unexpected attack on the flank. A great part of the Colquhouns' force consisted in cavalry, which could not act in the boggy ground. They were said to have disputed the field manfully, but were at length completely routed, and a merciless slaughter was exercised on the fugitives, of whom betwixt two and three hundred fell on the field and in the pursuit. If the MacGregors lost, as is averred, only two men slain in the action, they had slight provocation for an indiscriminate massacre. It is said that their fury extended itself to a party of students for clerical orders, who had imprudently come to see the battle. Some doubt is thrown on this fact, from the indictment against the chief of the clan Gregor being silent on the subject, as is the historian Johnston, and a Professor Ross, who wrote an account of the battle twenty-nine years after it was fought. It is, however, constantly averred by the tradition of the country, and a stone where the deed was done is called
MacGregor's brother was one of the very few of the tribe who was slain. He was buried near the field of battle, and the place is marked by a rude stone, called the Grey Stone of MacGregor.
Sir Humphrey Colquhoun, being well mounted, escaped for the time to the castle of Banochar, or Benechra. It proved no sure defence, however, for he was shortly after murdered in a vault of the castle,—-the family annals say by the MacGregors, though other accounts charge the deed upon the MacFarlanes.
This battle of Glenfruin, and the severity which the victors exercised in the pursuit, was reported to King James VI. in a manner the most unfavourable to the clan Gregor, whose general character, being that of lawless though brave men, could not much avail them in such a case. That James might fully understand the extent of the slaughter, the widows of the slain, to the number of eleven score, in deep mourning, riding upon white palfreys, and each bearing her husband's bloody shirt on a spear, appeared at Stirling, in presence of a monarch peculiarly accessible to such sights of fear and sorrow, to demand vengeance for the death of their husbands, upon those by whom they had been made desolate.