Somewhere within this townland, a rath endures in the landscape, one of the thousands of roughly circular earthwork enclosures that Irish farming families built during the early medieval period, broadly between the fifth and twelfth centuries. A rath, in simple terms, was a farmstead enclosed by one or more earthen banks and ditches, serving as a boundary, a status marker, and a measure of protection for people and livestock alike. That so many survive across Ireland is a function of folklore as much as archaeology; generations of farmers left them alone, wary of disturbing what were commonly believed to be fairy forts.

The Burren context adds a particular layer of interest. This is a region where ringforts, field walls, and cashels, the stone equivalent of earthen raths, appear in unusual density, partly because the thin soils and exposed limestone pavement preserved ancient land divisions that elsewhere were ploughed away. Leamaneigh Beg itself takes its name from the broader Leamaneh area, most associated with Leamaneh Castle, the tower house and later manor house that passed through the O'Brien family in the sixteenth and seventeenth centuries. That the townland is described as "beg", meaning small in Irish, suggests it was the lesser of two portions of land carrying the same name, a common administrative distinction in the area.