On the northern bank of the River Loobagh, on the eastern outskirts of Kilmallock in County Limerick, there is no stone, no millrace, no ruined wheel housing to catch the eye. Yet the ground underfoot almost certainly conceals the buried footprint of at least one watermill that was already old when someone thought to draw a map of the town around the year 1600.

That map, held in Trinity College Dublin as manuscript TCD MS 1209/62, is one of the more instructive documents to survive from late Elizabethan Ireland. It shows Kilmallock as a walled town, still functioning as a significant urban centre in Munster, and just outside its northern edge, to the east of a multi-arched stone bridge at the top of what is now Wolfe Tone Street, two watermills are depicted standing in close proximity to one another on the Loobagh's northern bank. Watermills of this period were typically modest timber and stone structures built to harness a river's flow for grinding grain, and having two in such close proximity suggests the Loobagh at this point offered a reliable and commercially useful head of water. By the time the Ordnance Survey produced its six-inch map of the area in 1840, the site is recorded under the name Mullenshane Corn Mill, a name that links the earlier mapped mills to a working industrial building still standing, or at least still noted, two and a half centuries later. Whether that later mill was a direct continuation of the earlier structures or a replacement on the same favourable stretch of river is not recorded.

The site sits in the Deebert area, close to the northern approach to Kilmallock, a town that repays attention in its own right for its surviving medieval walls, gatehouses, and collegiate church. The riverbank location of the mills would have placed them conveniently outside the town proper but within easy reach of its markets. There is nothing to see at the mill site itself, and a visitor should approach it less as a destination than as a layer beneath the landscape, something to hold in mind while reading the river's curve against the known contours of the 1600 map. The Loobagh moves quietly here, and the ground gives nothing away.