Built during the reign of James I, likely by the Rawley family, this impressive stronghold once consisted of a rectangular bawn measuring 180 feet by 120 feet, with walls standing 12 feet high and 4 feet thick. At each corner of this defensive courtyard stood a square tower complete with loopholes for musket fire, whilst the centre housed a formidable three-storey limestone house stretching 80 feet long and 30 feet wide. The Down Survey maps from the 1650s capture it in its prime, depicting a battlemented tower house within the square court, surrounded by its four defensive turrets.

The castle's turbulent history reflects the changing fortunes of Irish landed families. By 1654, the Civil Survey recorded it as a 'Ruinous Castle' on the lands of Redmond, Margaret and Ellen Rawly, accompanied by twenty cabins and a mill seat. After falling into decay, the property passed to the Croker family, who attempted to breathe new life into the ruins by constructing what was described as a 'splendid house' around 1765. In a peculiar twist of fate, this grand renovation was sold for a mere £200 to one of the labourers who had helped build it, and he promptly demolished the entire structure, leaving behind the fragmentary ruins visible today.

What remains of Rawleystown Court is a shadow of its former glory; by 1943, only a single gable wall and fragments of the enclosing courtyard survived, stripped of any distinguishing architectural features that might help date its original construction. Yet even these sparse remains carry weight, with the outline of the bawn still visible in modern aerial photographs, marking the footprint of what was once one of Limerick's notable fortified houses. The site serves as a poignant reminder of Ireland's plantation period architecture and the defensive mindset that shaped domestic building during an era of constant territorial uncertainty.