That much is certain. Beyond it, the record goes quiet. No ruins have been confidently identified, no millstone has been turned up in a field, and the exact spot where water was once channelled to drive a wheel remains, for now, unknown.

The source for this fragment of industrial history is the Civil Survey of 1654 to 1656, one of the most ambitious land assessments ever carried out in Ireland. Commissioned by the Cromwellian administration in the aftermath of the 1641 rebellion and the subsequent wars, the survey was intended to establish ownership and value of land across the country as a basis for redistribution among soldiers and creditors of the Commonwealth. Its surveyors moved townland by townland, recording not just acreage and soil quality but also features of economic value, including watermills. A watermill at this period would typically have been used for grinding grain, an essential part of any agricultural community's infrastructure, with a millrace or channel diverting water from a nearby stream to power a horizontal or vertical wheel. The mention of one at Corduff tells us that the area was productive enough in the mid-seventeenth century to support such a facility, even if the survey's compilers did not trouble themselves to fix its position with any precision.

Corduff today is a rural townland, and there is no structure on the ground that has been formally associated with this entry. Researchers and local historians with an interest in early modern Dublin's agricultural landscape may find the Civil Survey itself worth consulting directly, as it occasionally preserves details about mill ownership or adjacent landholders that can help narrow a location. Anyone walking the area with an eye to landscape archaeology might look for the telltale signs of former mill activity, a slight hollow where a millpond may have sat, a culverted or straightened watercourse, or earthworks along a stream bank, though none of these have been specifically documented here. The entry was compiled by Geraldine Stout and uploaded to the record in August 2011, where it sits as an open question rather than a solved one.