Somewhere in the townland of Kilkea, County Kildare, a church once stood that has left not the faintest mark on the ground. No ruin, no fragment of dressed stone, no earthwork hollow suggests where it might have been. The only clues to its existence are a handful of words preserved in two separate sources, separated by time and uncertain in their agreement with one another.

An undated annotation on an Ordnance Survey six-inch map held in the National Library of Ireland records the "site of Vilero church", a name that appears nowhere else with any confidence. Separately, a 1906 to 1908 publication by Fitzgerald references a chapel in this townland under the name "Kilcro", a form that suggests an early Irish ecclesiastical foundation, since "cill" or "kil" names typically denote an early Christian church or cell. Whether Vilero and Kilcro refer to the same structure, or to two entirely different buildings whose memories have blurred together across the centuries, is not clear. The place-name evidence pulls in slightly different directions, and without excavation or documentary corroboration, the question stays open. What is certain is that the site today carries no visible surface trace of anything ecclesiastical, or indeed of anything at all.