What makes the site quietly arresting is the combination of the two mill types: a corn mill, which ground grain into flour, and a fulling mill, which used hammers powered by water to beat and thicken woven cloth. The presence of both suggests a working rural economy of some complexity, now reduced to a note in a survey and a mark on an old map.

The Civil Survey of 1654 to 1656 recorded them in plain, unsparing language: "two decayed mills vizt., a fulling mill and a corne mill standing on a little brooke running through the sd lands onely useful in winter." That seasonal limitation, a stream too shallow in summer to drive the machinery, was probably always a constraint, and may partly explain why the mills had already fallen into decay before the surveyors arrived. The lands at that time belonged to John Kennedy of Gurteen, whom the same survey identifies as an Irish Papist, a designation used in the period to mark Catholic landowners who were increasingly subject to dispossession under Cromwellian policy. By 1838, when the first edition of the Ordnance Survey six-inch map was drawn, the site was still marked simply as a "Mill in ruins." The 17th-century Down Survey map of Dorrha and Bunacum parishes shows the mill standing on the west bank of the Pallas River directly opposite Pallas Castle, which still lies approximately 105 metres to the south-east, with the medieval church of Dorrha around 220 metres to the north-east. The clustering of mill, castle, and church along this short stretch of river is a familiar pattern in medieval Irish settlement, where water, power, and worship were rarely far apart.