These circular earthwork enclosures, known in Irish as ráth when formed from earthen banks and ditches, were the farmsteads of early medieval Ireland, occupied roughly between the fifth and twelfth centuries. Thousands survive across the country in varying states of completeness, and this one carries the name of its townland into the record without much further elaboration.

The place-name Lissanair offers a small clue of its own. The element "lios" (anglicised variously as lis or liss) is itself the Irish word for a ringfort enclosure, suggesting that the monument was significant enough, or visible enough, to anchor the identity of the land around it long before anyone began compiling formal records. That layering, a feature named for a feature, is common across Ireland and points to how central these enclosures were to the organisation of early rural life. A typical ráth would have enclosed a farmhouse, outbuildings, and perhaps a small yard, with the surrounding bank and ditch serving as a boundary against livestock straying and, to a lesser degree, against opportunistic raiding. Beyond Lissanair itself and its position within Clare, the specific history of this particular enclosure, its condition, dimensions, and any finds associated with it, remains to be fully documented in accessible form.