The castle appears on the Ordnance Survey 6-inch mapping, positioned just northeast of what’s now called Castlemitchell House, but time has erased all visible traces from the landscape. Like many of Ireland’s lost castles, its exact history remains somewhat mysterious, though its presence on historical maps confirms it once stood as part of the area’s medieval or early modern heritage.

The name Castle Mitchell likely derives from an Anglo-Norman family who held lands in this part of Kildare, as was common throughout the Pale during the medieval period. The castle would have served as both a defensive structure and a symbol of authority over the surrounding agricultural lands. Its complete disappearance isn’t unusual; many Irish tower houses and smaller castles were demolished for building materials in the 18th and 19th centuries, their stones repurposed for local houses, walls, and farm buildings.

Today, the area around Castlemitchell North is quiet countryside, giving little hint of its fortified past. While the physical castle has vanished, its memory persists in the place names of the townland and the nearby house, ensuring that this piece of Kildare’s history isn’t entirely forgotten. For those interested in tracing Ireland’s lost castles, the old Ordnance Survey maps remain the best guide to where these structures once stood, even when the ground itself no longer remembers.