It is easy to miss, worn and unremarked upon, yet it may be one of the older things still attached to the standing fabric of the church at Clenor. The west end of the surviving south wall, along with this carving, is considered probably Romanesque in origin, placing it somewhere in the twelfth or early thirteenth century, while the eastern portion of the same wall, with its pointed-arched doorway and ogee-headed window light, is late medieval. That a single wall should contain two such distinct phases of building, legible even now in the change of masonry style and wall thickness, gives the ruin an almost stratigraphic quality.

The church was no minor foundation. It is listed among the chief churches of Tuath Muighi Finne in the Crichad an Chaoilli, a medieval territorial survey of the Fermoy region, and it appears in the Papal Taxation lists of 1291, suggesting it was a functioning parish church of some standing. By 1615 it was already described as being in ruins, and by 1694 it had been fully abandoned. Nineteenth-century antiquarians still found more of it standing than survives today. Windele recorded the north wall as windowless and gave the church's length as about 70 feet; Buckley measured a fragment of the north wall base still rising to roughly three feet. That wall is now mostly subsumed by graves, with only a short run of footings visible. What remains of the south wall divides into its two phases quite visibly: the western section is built of large rectangular limestone blocks, roughly coursed, and carries several corbels projecting from the external face near the top, which suggest a former annexe of some kind once abutted the building here. The narrower eastern section shifts to random-rubble limestone with occasional sandstone, and retains the doorway, the ogee window, and a small piscina niche, the shallow stone basin set into a wall that priests used for rinsing sacred vessels during Mass.