The only tangible evidence of its existence is a stone armorial plaque dated 1582, which now sits embedded in the wall of the stables at Sheastown Lodge. This plaque bears the Latin inscription ‘Insignia Richardi Shee Kilkeniens armigeri 1582’, proclaiming the arms of Richard Shee of Kilkenny, Esquire, and offers a glimpse into the prominence of the Shee family who once controlled this estate.

The exact location of the castle remains uncertain, though historical detective work suggests it likely stood on or near the site of the old Sheastown House, a structure documented by Robertson in 1851 but demolished in the late nineteenth century. This house occupied a commanding position above the river at a distinctive right-angled bend in the north avenue leading to Sheastown Lodge. The strategic placement would have been typical for a castle of its era, providing both defensive advantages and control over river crossings.

Today, visitors searching for the castle will find only the armorial plaque as witness to centuries of local history. The disappearance of both the castle and the later Sheastown House reflects a common pattern across Ireland, where many significant historical structures have been lost to time, conflict, or changing economic circumstances. For those interested in tracing the footsteps of the Shee family and their lost stronghold, the site has been provisionally located to where the old Sheastown House once stood, though the true position of the medieval castle may forever remain part of Kilkenny’s buried past.