Set into its frame are two pieces of carved limestone that were never intended for this purpose. They are medieval stonework, almost certainly fragments of a window from a much earlier structure, repurposed by someone who either recognised their quality or simply had them to hand and found them useful.

The stone came from a building that has not been conclusively identified. It may have been a church, or it may have been a castle; the fragments alone are not enough to settle the question, and whatever larger structure they belonged to appears to survive only as a separate archaeological record in the area. Carved limestone tracery or moulding of this kind was common to both ecclesiastical and defensive buildings in medieval Ireland, and without the parent structure intact, the two possibilities remain open. What is clear is that at some point the stones were removed from their original setting and incorporated into the fabric of Creeve Cottage's outbuildings, where they have remained.

The fragments are visible in the barn window within the cottage yard, which makes them an quietly odd detail to encounter: medieval craftsmanship embedded in a working agricultural structure, doing the mundane job of filling a gap in a wall.