These circular earthwork enclosures, built predominantly during the early medieval period roughly between the fifth and twelfth centuries, were the farmsteads of their age, defined by one or more raised earthen banks and ditches that enclosed a family's dwelling and offered a degree of protection for people and livestock. They are among the most common archaeological monuments in Ireland, numbering in the tens of thousands, yet their very familiarity can work against them. Each one marks a specific human decision about where to settle, how to manage land, and how to signal presence in a particular place.

The townland name Sheeaun most likely derives from the Irish "Síán", sometimes interpreted as a small fairy mound or an earthen rise, which hints at how local communities have long read meaning into features of the ground beneath them. Clare is particularly well furnished with ringforts, reflecting centuries of dense early medieval settlement across its limestone plains and drumlins. A rath of this type would typically have been home to a farming family of modest status, the bank and ditch serving as a boundary as much as a fortification, marking out what belonged to one household from the wider commonage and the claims of neighbours.