The Ordnance Survey six-inch sheets record the townland feature as "Lisheen", a diminutive of the Irish "lios", meaning a small fort or enclosure, but the name carries a secondary weight in Irish tradition. Lisheen was a term commonly applied to children's burial grounds, known in Irish as "cillíní", the quiet, unconsecrated plots where unbaptised infants were laid to rest outside the bounds of formal churchyards. No grave markers, no earthworks, no surface trace of any kind survives here to confirm what the name implies.

The site is associated with a nearby enclosure, itself a separate archaeological feature, which suggests a longer history of human activity in the immediate area. The pairing is not unusual. Children's burial grounds in Ireland were frequently established in or beside older, pre-Christian earthworks, perhaps because such liminal places, already set apart from everyday use, felt appropriate for those who occupied an ambiguous position in the religious geography of death. The practice of burying unbaptised children in cillíní persisted in parts of Ireland well into the twentieth century, driven by the Catholic theological doctrine that held such infants ineligible for consecrated ground. What the name Lisheen at Mirehill preserves, then, is the memory of that practice, even after the physical evidence has been absorbed back into the landscape.