It ground grain, fell silent, and then vanished so completely from the landscape that its exact position has never been pinned down. That combination, a documented structure with a documented end and no recoverable footprint, places it in an interesting category of historical presence: known but unlocalised, real but unreachable.

The mill is first attested in records from 1324, and appears again in 1347, suggesting it was an operating concern for at least part of the fourteenth century. By 1490, documentary sources describe it as closed. The historian H.B. Clarke, writing in 2002, situated it at the western end of Colman's Brook, a watercourse that fed the mills and industries of medieval Dublin's southern margins. Medieval watermills of this type typically used the flow of a stream or diverted channel to drive a horizontal or vertical wheel, which in turn powered millstones for grinding cereals. They were functional, industrial buildings, usually timber-framed or stone-built depending on local resources, and integral to the economy of any urban settlement. The closure noted by 1490 may reflect the broader disruption that affected many Dublin-area properties in the later medieval period, though the records give no specific reason.

Because the site has not been precisely located, there is nothing to visit in the conventional sense. The brook itself, or what remains of it in culverted or altered form beneath the modern city, runs somewhere through the streets of Dublin's south city. For anyone interested in medieval urban infrastructure, the interest here lies less in a physical place and more in what the record suggests: a functioning industrial site operating quietly on the edge of a medieval city, serving it for generations, and then disappearing without obvious trace. Local and county historic environment records, along with Clarke's 2002 work, remain the most useful starting points for anyone researching the watercourses and lost industries of this part of Dublin.