The feature measures roughly ten metres east to west and five metres north to south. Today there is nothing to see at ground level, no stonework, no earthwork, no ridge in the grass. Whatever stood here has left only a cartographic ghost.

The Devereux family appears in records connected to Cleristown as early as 1543, and by 1640 John Devereux held 480 acres there, alongside a further 580 acres spread across Sleedagh, Blackmoor, Norristown, and Pollmanagh in the neighbouring parish of Kilmannan. These were substantial landholdings by any measure. Yet when the Civil Survey was conducted between 1654 and 1656, a detailed inquisition into land ownership and settlement carried out after the Cromwellian conquest, no castle at Cleristown was recorded. The silence is significant. The Civil Survey was thorough about such things, and the absence of any mention suggests that by the mid-seventeenth century, if a castle had ever existed here, it was already gone or too ruinous to note. Whether the OS cartographers a century and a half later were working from a local tradition, an earlier map, or simply recording a folk memory is not clear. Approximately ten metres to the south lies a church site, a proximity that hints at the kind of small manorial cluster, castle and chapel in close company, common across medieval Wexford.