That gap is itself quietly telling. Across rural Ireland, early ecclesiastical sites range from the well-excavated and much-visited to the almost entirely forgotten, their physical remains sometimes reduced to a scatter of worked stone in a field, a suspiciously regular mound, or a burial ground still in use long after the building it once served has vanished entirely.

The townland name Toomore derives from the Irish "Tuath Mhór", meaning large territory or large district, a placename element that in Mayo often points to ancient divisions of land with early Christian or pre-Norman associations. Churches in such settings were frequently established between the sixth and twelfth centuries, serving local communities as simple single-cell structures built first in timber and later in stone. Many were associated with minor saints whose cults remained intensely local, their feast days marked at the site long after any formal ecclesiastical function had ceased. Without more specific documentation it is not possible to say when this particular church was built, who founded it, or what survives above ground today.