The wall, around eighty centimetres thick, runs east to west and stands as a quiet anomaly among the headstones, easy to overlook unless you already know to look for it.

The church was built in 1790, according to Samuel Lewis writing in his Topographical Dictionary of Ireland in 1837, but the site itself is older than that. The 1790 structure was raised on the foundations, or at least the ground, of an earlier church whose origins are not precisely recorded. That layering of one religious building on top of another was common practice in Ireland, where sacred sites often accumulated centuries of use, each phase of construction partly erasing or incorporating the one before. What survives today is a fragment of the 1790 building, a single short run of masonry that has outlasted the rest of the structure around it.