Where a medieval stronghold once stood, you’ll now find a nineteenth-century house and its outbuildings, likely constructed directly atop the castle’s foundations. The original fortress appears on the Down Survey map of the barony of Eliogarty, positioned south of a corn mill and southeast of a tuck mill, marking its importance in the local medieval landscape.

By the time of the Civil Survey in 1654-6, the castle was already recorded as ‘irrepairably demolished and the stumpe of a castle’, a shadow of its former glory. The lands and castle had belonged to James, Lord Baron of Dunboyne in 1640, and the estate held significant legal privileges; Fishmoyne was described as ‘an ancient Mannor haveing ye privilege of a Court leet and Court Baron by patent from the Crowne’. These courts allowed the lord to exercise judicial authority over local matters, from petty crimes to land disputes, marking Fishmoyne as an important administrative centre in medieval Tipperary.

Today, no visible traces of the medieval castle remain above ground. The current Fishmoyne House occupies roughly the same spot where the castle once commanded its strategic position, a Georgian successor to a medieval predecessor. The transformation from fortified castle to country house reflects broader changes in Irish society; from the defensive necessities of the medieval period to the more settled, though still turbulent, world of the seventeenth and eighteenth centuries.