Though nothing remains visible above ground today, this unremarkable patch of farmland once held a structure significant enough to be marked as a castle on Ordnance Survey maps from both 1839 and 1924. The maps show a rectangular footprint measuring roughly 20 metres east to west and 10 metres north to south; a modest size that suggests this was likely a fortified house or tower house rather than a grand fortress.

The site’s history becomes more intriguing when examining the documentary evidence, or rather, the lack of it. The Civil Survey of 1654-56 records that Morgan Cavanagh, identified as an Irish papist, owned 500 acres in Ballileigh in 1641. Yet curiously, this detailed survey makes no mention of any castle on his lands. This omission raises questions: was the structure already in ruins by the 1650s, perhaps destroyed during the tumultuous years of the Confederate Wars? Or was it built after the survey, which would make the later map designations puzzling?

Today, cattle graze where this enigmatic building once stood on the fairly level landscape, and visitors will find no stone foundations, earthworks, or any other physical traces of the past. The site serves as a reminder of how much of Ireland’s built heritage has vanished completely, leaving only faint marks on old maps and unanswered questions about the families who once called these lost castles home. Archaeological investigations might one day reveal subsurface remains that could shed light on this Wexford mystery, but for now, the castle of Ballyleigh exists only in the cartographic memory of 19th and early 20th century surveyors.