In the townland of Sheepwalk in County Wicklow, the first edition of the Ordnance Survey six-inch map, produced in 1838, marks a feature labelled 'Cromwells Stone', suggesting a standing stone significant enough to have acquired a local name. Standing stones are among the most enduring prehistoric monuments in Ireland, typically dating from the Bronze Age and erected for purposes that remain genuinely uncertain, whether as boundary markers, ritual focal points, or commemorations of the dead. The name 'Cromwells Stone' is itself a familiar type in Irish placename tradition, often attached to prominent landscape features in the post-medieval period regardless of any real connection to Oliver Cromwell.

By the time later editions of the Ordnance Survey were produced, the stone had quietly disappeared from the cartographic record. When the site was physically inspected in 1990, no trace of it could be found on the ground. Whether it was removed, broken up, buried, or simply absorbed into field clearance at some point in the intervening century and a half is not known. What remains is a name on an old map, pointing at a field in Wicklow where something once stood.