Gleneagles, a romantic glen in Blackford parish, SE Perthshire, traversed by the first 2 ½ miles of Ruthven Water, and descending north-north-westward from 950 to 400 feet above sea-level. It carries up a road from Strathearn and Strathallan to Glendevon; and some suppose it to have been the route by which Agricola led his troops into Strathearn prior to their encampment at Ardoch. Towards its foot, 3 ¼ miles S by W of Auchterarder, stands a plain mansion of 1624, Gleneagles House. The estate belonged to the Haldanes from the 12th century till 1799, when it devolved on Admiral Lord Duncan, whose great-grandson, third Earl of Camperdown, holds 7122 acres in Perthshire, valued at £3479 per annum.—Ord. Sur., sh. 39, 1869.

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