The place name itself offers the first clue to its origins: Kilcommon derives from the Irish Cill Chomáin, meaning the church of Saint Comán, a dedication found in several locations across Connacht and associated with early medieval monastic settlement. Churches bearing this name were typically small, local foundations serving the spiritual needs of a rural community, and their ruins, where they endure, often sit within or beside an older burial ground.

Beyond the name and its implications, the documentary record for this particular site remains sparse at present. What can be said is that church ruins of this type in Mayo frequently date to the medieval period, with some incorporating fabric from earlier foundations. The surrounding landscape of north Mayo, shaped by blanket bog and coastal exposure, has preserved many such sites in a state of arrested decay, the stonework slowly being absorbed back into the ground but never quite disappearing. Kilcommon as a place retains its identity partly through the persistence of these physical traces.