Ardvoirlich, an estate, with a mansion, the property of Col. Rt. Stewart, in Comrie parish, Perthshire. The mansion stands on the S side of Loch Earn, 9½ miles W of Comrie village; is the Darnlinvarach of Sir Walter Scott's Legend of Montrose; and contains a large gem, seemingly white rock crystal, bound with four silver bands in very antique workmanship, and long regarded by the surrounding population as a talisman, giving to water in which it was dipped virtue for healing all sorts of diseases of cattle.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)