Friarstown Castle, Friarstown, Co. Carlow
The ruins of Friarstown Castle in County Carlow tell a fascinating story through both their surviving stones and the hidden features revealed by aerial photography.
Friarstown Castle, Friarstown, Co. Carlow
What remains today is the southwest corner and western wall foundations of a rectangular tower house, built from roughly coursed granite boulders. The structure originally measured approximately 7.5 metres from northeast to southwest and 14.6 metres from northwest to southeast, though much of it now lies in rubble.
Aerial photographs taken by Cambridge University have uncovered a remarkable complex of earthworks surrounding the tower house that aren’t visible from ground level. The cropmarks reveal a D-shaped enclosure, roughly 50 metres in diameter, with two defensive ditches or fosses encircling the tower. To the southwest, rectangular enclosures suggest the presence of a moated site with an attached field system, indicating this was once a substantial medieval settlement rather than just an isolated fortification.
The castle’s religious connections run deep; it was held by the Preceptory of Killerrig at the time of the dissolution of the monasteries. Adding to the site’s spiritual significance, a bullaun stone, a type of boulder with a depression traditionally used for grinding or as a blessing stone, was discovered near the tower house. These portable stones often marked places of religious importance in medieval Ireland, suggesting the site may have had sacred associations predating or alongside its defensive role.