What remains is a paper trail, fragments of administrative and cartographic record that together sketch the outline of a building whose physical form is entirely gone.

The mill surfaces first in a 1647 levy document, during the turbulent years of the Irish Confederate Wars, when a fine of £15 was imposed on a group of mills across Co. Westmeath to pay Captain Ignatius Nugent of the Irish Confederate Army. The contribution attributed to "Moore in Creniston, or same, one mill" came to 4s 8d, a modest sum that nonetheless confirms the mill was operating and considered worth taxing. Twelve years later, in 1659, the Down Survey, a vast mid-seventeenth-century mapping project that recorded landownership across Ireland following the Cromwellian settlement, included a terrier, a written description accompanying the map, for Castletown parish. It noted that at Cronistowne there were "the walles of a Chappell of Ease wth a Corn Mill in repaire". The chapel beside it was already a ruin; the mill, apparently, was still working. By 1837, when the Ordnance Survey produced its first detailed six-inch maps of Ireland, a corn mill was marked in the area, and it is possible, though not certain, that it occupied the same site as the one described in 1659. By 1982, however, investigators found no visible remains at all. A tributary of the Stonyford River that would have powered such a mill had been drained by the Office of Public Works, removing the last physical clue that anything industrial had ever stood there.