The antiquarian Westropp, writing in the early 1900s, noted that whilst the Down Survey Atlas marked an unnamed castle in this parish, curiously no castle was mentioned in the records of Ballinlondry Manor when it was held by Sir William Fenton. This discrepancy between historical sources adds a layer of mystery to the site’s history.

The 1840 Ordnance Survey six-inch map bears the annotation ‘Site of Castle’, marking where the structure once stood, though by that time it had already disappeared. Today, no surface remains are visible; the castle has been completely levelled, its stones likely repurposed for local building projects or simply lost to time. What might have been a defensive stronghold or manor house has been reduced to a memory preserved only in old maps and antiquarian notes.

The absence of physical remains makes Ballyduff’s lost castle particularly intriguing for those interested in Ireland’s hidden history. Its story speaks to the countless fortifications that once dotted the Irish countryside, many of which have left little trace beyond placenames and cartographic ghosts. The site serves as a reminder that Ireland’s mediaeval landscape was far more densely populated with castles and tower houses than what survives today, each one representing a piece of the complex puzzle of land ownership, defence, and power that characterised centuries of Irish history.