Corn mills, powered typically by a millrace diverting water from a nearby stream or river onto a horizontal or vertical wheel, were once a fixture of almost every productive townland, grinding locally grown cereals into flour or meal. Their ruins are frequently overlooked, absorbed into overgrown field boundaries or repurposed over generations, yet they remain among the more tangible remnants of pre-industrial rural economies.

The specific history of the Ballynona mill, including its construction date, the family or estate that operated it, and the circumstances of its eventual decline, is not currently documented in available public sources. What can be said is that Cork, with its relatively fertile river valleys and strong tradition of cereal cultivation, supported a significant number of such mills from the medieval period onwards, with activity intensifying during the eighteenth and early nineteenth centuries when tillage farming expanded under the pressure of rising grain prices and population growth. The decline of many rural mills followed the post-Famine contraction of tillage in favour of pasture, leaving structures like this one to fall gradually out of use.