Turning now from the east side of the loch to its west, from what might be called its Montrose side to its Colquhoun side, we have in close succession not far off the splendid mansion houses of Cameron, Auchendennan, Auchenheglish, and Arden. Immediately above Arden is Glen Fruin (the Glen of Sorrow), coming down from near Garelochhead. It has the ruins of an ancient castle of the Colquhouns, and it was here that a fierce conflict took place between the Macgregors and the Colquhouns in 1602, when the latter were routed with a loss of 200 men, the Macgregors only losing two, one of them, however, being John, the brother of the chief. It is this battle which is popularly called “The Field of Lennox.” It is said that the Macgregors also put to death in cold blood some 80 youths, popularly called “the Students of Dumbarton,” who had gone out to see the fight. A short time before this Sir A. Colquhoun had appeared before James the Sixth at Stirling, and complained of the cruel murders committed by the Macgregors, and to give emphasis to his complaint he was attended by a considerable number of women who carried the bloody shirts of their husbands and sons. The king gave him a commission to repress the crimes and apprehend their perpetrators, and the battle of Glen Fruin was the result. And this in its turn led to the king issuing letters of fire and sword against the Clan Gregor, to the confiscation of their lands. Their clan name was proscribed by Act of the Privy Council. But the Acts passed against them were repealed in 1775. Till then, however, the members of the clan usually took the name of various landed proprietors. Thus, the famous Rob Roy, who died in 1736, was Campbell, after the family name of his patron, the Duke of Argyll. Not far up the glen from Arden there is the hill of Dunfion, which is said to have been at one time the residence of Fingal, and traces of a fortress said to have been built by him are still pointed out. Two and a-half miles farther up you can see Ross Dhu (the black promontory), on which is the tower of the ancient castle of the Luss family, and their mausoleum near it; the mansion-house standing on a promontory almost surrounded by water.