The prefix "Kil" derives from the Irish "cill", meaning a church or monastic cell, and "Macshane" likely preserves the name of an early Christian founder or patron saint, now largely forgotten. That combination suggests a site of genuine antiquity, one of the countless small ecclesiastical foundations that once dotted the Irish countryside, most of them reduced over the centuries to a few courses of stone, a graveyard, or simply a field name that outlasted the building itself.

Beyond the evidence lodged in the place name, the specific history of the church at Kilmacshane remains difficult to recover in any detail. Sites of this type were typically established during the early medieval period, sometimes as simple oratories serving a local community, and many were later absorbed into the Anglo-Norman parish system following the twelfth-century church reforms. Whether the Kilmacshane foundation survived that reorganisation, fell into ruin beforehand, or was replaced by a later structure is not currently known from available sources. What can be said is that the site is formally recognised as a monument, placing it within a broader landscape of early ecclesiastical remains that makes County Kilkenny one of the more archaeologically layered counties in Ireland.