Nothing visible survives of whatever came before it. No carved stonework, no ruined gable, no scattering of worked masonry; the earlier church has simply vanished beneath and around the 1819 building that replaced it. That kind of layered erasure is not unusual in Irish ecclesiastical history, but it does give the site a quietly puzzling quality, the absence of physical evidence standing in contrast to a documentary record that reaches back centuries.

The name Kilscoran points to early medieval origins, with the "kil" prefix deriving from the Irish "cill", meaning a church or monastic cell. By the early fifteenth century the site was functioning as a parish church: a William Barret is recorded as parson there in 1414. More than two hundred years later, the parish still appears in formal ecclesiastical records. The Visitation of Thomas Ram, Protestant bishop of Ferns, notes that in 1615 a man named Adam Hay held the position of Rector, and that both the church and its chancel had been repaired around that time. That detail suggests the building was already in some need of attention by the early seventeenth century, though it evidently remained in use. By the time the antiquarian John O'Donovan was writing around 1840, the older structure was gone entirely, replaced by the building erected in 1819 that still stands within the same walled graveyard.