That uncertainty is not carelessness on the part of historians; it is baked into the record. The exact location of this monument is listed as unknown, which places it in a peculiar category of Irish archaeology: things that definitely existed, left physical traces, and yet cannot be pinned to a map with any confidence.

Adams, writing in 1881, recorded that the castle stood near a rath, a ringfort of the kind once common across the Irish countryside. According to local tradition, that rath was deliberately destroyed by an Irish garrison to prevent English forces from occupying it as a defensive position, a small act of denial that points to the volatile military landscape of the early modern period in Ireland. When the rath was finally levelled in 1873, the ground gave up a modest collection of objects: four shillings, an Irish Halfpenny minted during the reign of William and Mary, a defaced seventeenth-century token, and the remnants of a narrow paved road running beneath the surface. Coins of William and Mary place the deposit somewhere in the 1690s at the latest, which fits neatly with the period of the Williamite Wars, when control of the Irish countryside was fiercely contested. The defaced token is harder to read, literally and figuratively, its inscription worn or deliberately obscured.

There is no marked site to visit, no interpretive panel, and no obvious feature in the landscape to seek out. Cloghran sits close to Dublin Airport, and the area has changed considerably over the centuries, which makes ground-level investigation more complicated than it might be in a more rural setting. What remains is essentially a place-name, Castlemoate, carrying the memory of something that once had walls and a function, and a thin scatter of coins and road-stone that surfaced briefly in 1873 before the record went quiet again.