It is not a grand structure by any measure, and that is precisely what makes the record of it so quietly interesting. What remains is a small rectangular shell, and the details that have come down to us are spare but sufficient to sketch the building in the mind.

The antiquarian Thomas Johnson Westropp visited and recorded the church in the early years of the twentieth century, publishing his findings in 1904 to 1905. His account is economical: the building measured 39 feet by 18 feet, roughly 13 metres by 6, making it a compact, single-cell structure of the kind common to rural medieval Ireland. Westropp noted that the gables retained an oblong east window and a pointed west door. The pointed arch of the doorway is a detail worth pausing on, as it suggests Gothic influence, a style that filtered into Irish ecclesiastical architecture from the twelfth century onwards and persisted in vernacular buildings long after it had fallen from fashion elsewhere. The east window, oblong rather than arched, sits at the liturgically significant end of the church, oriented towards Jerusalem in keeping with Christian tradition. Beyond these dimensions and features, the documentary record is thin.

Fantstown is a quiet rural townland, and the church sits within the kind of landscape where such ruins tend to blend into field boundaries and hedgerows over time. Anyone visiting should expect a site that rewards patience rather than spectacle. It is worth checking access arrangements locally before making the journey, as many such ruins in County Limerick sit on private farmland. Bring the Westropp measurements in mind as you walk the perimeter; they help to make sense of what little masonry may remain, and give a sense of the human scale of a building that was never intended to be anything other than a working parish church serving a small community.