First recorded on the 1841 Ordnance Survey 6-inch map, this rectangular enclosure once stretched approximately 40 metres from east to west and 25 metres from north to south. Today, visitors to the area would find no visible traces above ground; the site has been completely absorbed back into the landscape, its earthworks levelled by centuries of agricultural activity.

Moated sites like this one were a common feature of the Anglo-Norman settlement of Ireland during the 13th and 14th centuries. These fortified farmsteads typically consisted of a raised platform surrounded by a water-filled ditch, providing both defence and drainage for the timber or stone buildings within. The moat itself would have been between two and five metres wide, creating a formidable barrier against raiders whilst also serving as a source of fresh fish for the inhabitants. The rectangular shape of the Clonbarrow site suggests it followed the typical pattern of these settlements, which housed everything from manor houses to granaries within their protective boundaries.

Though nothing remains visible at Clonbarrow today, its presence on the earliest detailed mapping of Ireland speaks to the thoroughness of those Victorian surveyors who documented every earthwork, ruin, and archaeological feature they encountered. The site’s inclusion in the Archaeological Inventory of County Laois ensures that even vanished monuments like this continue to contribute to our understanding of medieval settlement patterns in the Irish midlands, reminding us that the peaceful fields of modern Laois once bristled with the defensive works of colonising farmers.