Mills of this kind, whether water-powered corn mills or smaller horizontal mills of the type common across rural Ireland for centuries, were once the quiet engines of local economies, grinding grain for communities that depended entirely on what the surrounding land could produce. That one has been identified and logged here suggests the survival of something physical, whether structural remains, earthworks, or the traces of a mill race, the channel that directed water to drive the wheel.

Beyond its location in Mayo and its classification as a mill, the available record for Cuillonaghtan offers little further detail at present. The specific dates, the name of any family associated with its operation, the type of milling carried out, and the current condition of any remains are not documented in a form that can be drawn upon here. What can be said is that County Mayo has a considerable density of recorded mill sites, reflecting both the agricultural pressures of pre-Famine Ireland and the ingenuity applied to local watercourses, however modest, to harness their energy for grain processing.