Marked as Eustace's Castle on the first Ordnance Survey map and apparently straddling the boundary between Cooperalley and Greencloyne, this house was the residence of John Conroy Browne in the second half of the 19th century. At the time of Griffith's Valuation the buildings were valued at £25 and held from William Fitzgerald. J.C. Browne of Mistletoe Castle owned 16 acres in county Cork in the 1870s. The house is stated to have been built in the 1770s as a summer residence for the Villiers-Stuart [Stuart] family. This house was for sale in 2009.