Templenagalliaghdoo, in the townland of Killeen in County Mayo, carries within it a compressed piece of the Irish language: "teampall" meaning church, and an epithet that likely references dark or black hags, those ambiguous figures from Gaelic tradition who appear in place names across the west of Ireland with unsettling regularity. A site that memorialises such figures in its very title is, almost by definition, unusual.

Killeen, the townland name, is itself significant. "Cillín" in Irish refers to an unconsecrated burial ground, typically used for unbaptised infants, and these small, melancholy enclosures are found throughout Connacht, often at the edges of fields or beside older ecclesiastical remains. The pairing of a cillín place name with a church site dedicated to or associated with dark supernatural women suggests a location that sat at the margins of official religious practice, the kind of place where older observances persisted quietly alongside orthodox Christianity. Whether the "galliaghdoo" element connects to a specific local tradition or reflects a broader folk memory attached to a ruined or forgotten structure is the sort of question that makes this corner of Mayo genuinely interesting to those who follow the geography of belief in early medieval Ireland.