The townland sits in County Kilkenny, and somewhere within it lies a graveyard old enough to have earned a formal monument record, the kind of designation usually reserved for sites with a traceable history stretching back centuries, often to an early medieval church or a long-vanished religious foundation.

The name Killonerry itself offers a clue. The "Kil" prefix derives from the Irish "cill", meaning a cell or small church, typically associated with an early Christian foundation, sometimes little more than a hermit's enclosure or a modest oratory serving a scattered rural community. Many such sites became the nuclei of parish graveyards that continued in use long after any standing structure had disappeared, leaving the burial ground as the sole surviving trace of what was once a place of organised religious life. Without further detail in the surviving record, the specific history of this particular graveyard, its founding, its dedications, or any notable burials, remains elusive for now.