In a graveyard to the north-east of Kilcock town centre, a faint rectangular swelling in the ground is more or less all that remains of what locals have long called St Coca's Church. The raised area, measuring roughly 18 metres east to west and 6 metres wide, rises no more than half a metre above the surrounding soil. At its north-eastern edge, a short run of walling, about 3 metres in length and composed of small mortared stone blocks, just breaks through the sod. It is an easy thing to walk past without registering what you are looking at.

The church's history, where it can be pieced together at all, moves between the suggestive and the uncertain. According to Cullen (1999), this may be the church referred to in an Ecclesiastical Commissioners Report of 1303, which noted a building capable of holding 90 people and recorded its possible transfer to the Knights Hospitaller, a military-religious order that managed considerable Irish ecclesiastical and agricultural property during the medieval period. Before any of that, the site may have considerably older roots: local tradition holds that it sits on the footprint of a sixth-century monastery, likely connected to St Coca, an early Irish saint associated with the area that gives Kilcock its name. A decorated medieval font, now housed in the nearby nineteenth-century Catholic church of St Patrick's, is thought to have originated here, removed at some point after the older building fell out of use or fell down entirely. Even the Ordnance Survey's first-edition six-inch map of 1838, which appears to show a roofed structure standing in the graveyard's southern corner, may simply be a cartographic error, adding one more layer of ambiguity to a site that resists easy reading.

The graveyard is still in use, and the remains of the church occupy its north-eastern section. The projecting masonry is modest and easy to miss, but once you know what the slight ground disturbance represents, the proportions of the vanished building become legible underfoot.