Site of Castle, Castletown Upper, Co. Westmeath
The curious case of Castletown Upper's vanishing castle in County Westmeath reveals how even the Ordnance Survey can get things wrong.
Site of Castle, Castletown Upper, Co. Westmeath
According to historical records, a castle once stood here, described in 1837 OS memoranda as “an Old Castle in Ruins”. However, pinpointing its exact location has proven surprisingly tricky. The first edition OS 6-inch map shows the castle site amongst a cluster of buildings, including a small square structure that may have been the castle building itself.
Later map revisions mysteriously relocated the castle to a field southwest of its original marking, but this appears to have been an error. When the Archaeological Survey of Ireland visited in 1981, they found the landowner bulldozing the supposed castle site to remove field fencing. Despite the earth disturbance, no trace of any castle emerged; no building stones, wall foundations, or any archaeological evidence whatsoever. The landowner confirmed he’d ploughed these fields with horse-drawn equipment for years without uncovering anything resembling castle remains.
The most likely explanation is that the castle, whatever form it took, stood where those clustered buildings appear on the first edition map, not in the empty field where later cartographers mistakenly placed it. Today, visitors searching for this phantom fortress will find only ordinary farmland where the revised maps claim it should be, whilst the true site remains a matter of educated guesswork amongst the built-up area shown on those earliest surveys.