The house was reportedly built atop the foundations of an earlier medieval castle, though no trace of this original structure remains visible at ground level. The site overlooks the river, which flows northwest to southeast about 15 metres to the east, and sits at the eastern end of a roughly rectangular area containing various earthworks that likely relate to both the castle and the later house.

The manor of Kilmeadan has a long and well-documented history of ownership. In 1282, it belonged to John Fitzthomas Fitzgerald, but by the early 14th century it had passed to the Le Poer family. John, son of Benedict le Poer, held the title of Lord of Rathgormuck and Kilmeadan in 1328, and his descendants maintained this lordship well into the fifteenth century. By 1640, according to the Civil Survey, the manor had come into the possession of John Power of Dunhill, marking another shift in the property’s long chain of noble ownership.

The site today encompasses approximately 200 metres from northeast to southwest and 110 metres from northwest to southeast, with the earthworks scattered throughout providing tantalising hints of the area’s medieval past. While the original castle may have vanished, replaced by the 17th-century house whose ruins now dominate the site, the location continues to tell the story of centuries of Irish aristocratic life along the banks of the Suir.