The one at Gortmore, in County Galway, is among the recorded monuments of the region, though the details of its history, its construction, and its present condition remain sparse in the public record.

Milling in Ireland developed significantly from the early medieval period onward, with horizontal-wheeled mills giving way over centuries to the more powerful vertical-wheeled designs common by the post-medieval era. Many such mills continued operating into the nineteenth century, grinding oats and wheat for local communities, before falling into disuse as larger commercial operations took over. Without specific documented detail for this particular site, it is difficult to say when the Gortmore mill was built, who owned it, or for how long it remained in use. What is known is that it has been formally recognised as a monument, placing it within a wider landscape of industrial heritage that survives, in varying states of preservation, across Connacht.