That much is certain. Beyond the bare fact of its existence as a recorded monument, the details are elusive, which itself says something about how many early ecclesiastical sites in the west of Ireland still await proper documentation.

The place name offers a small clue. Pollacappul derives from the Irish Poll an Chapaill, meaning the hole or hollow of the horse, a toponym that suggests the land rather than any religious significance. Early churches in this part of Connacht were often simple structures, sometimes no more than a rectangular dry-stone enclosure, built to serve scattered rural communities in the early medieval period or later. Whether the church at Pollacappul fits that pattern, or represents something from a different era entirely, remains unclear without fuller archaeological detail to draw on.