It is a quiet demotion for what was evidently a substantial structure, and a reminder of how often the fabric of one building simply gets absorbed into the next.

The ruins occupy the site of Carrowbrowne Castle, and the house itself, measuring over 13.65 metres in length and 6.52 metres in internal width, was probably built in the seventeenth or eighteenth century. What survives is fragmentary but legible: a large portion of the south-east side-wall, the north-east gable, and part of the north-west wall still stand. A doorway in the south-east wall is flanked by three bays of windows at both ground and first-storey level, and fireplaces survive in the north-east corner on each floor, suggesting a house built for comfort as much as defence. There are also possible traces of a west wing, which, if confirmed, would indicate a structure of some ambition. The reference by Athy in 1914 places the building in an early antiquarian record, though the details remain sparse.

The date-stone is perhaps the most evocative detail. Reused in a farm building, it marks a moment, 1674, when someone thought the construction worth commemorating in cut stone, and the inscription, however fragmentary now, once named or claimed or commemorated something specific. That specificity has largely been lost, leaving only the numeral and the surrounding ruin to suggest what the place once was.