That gap in the record is itself quietly telling: Mayo is a county saturated with archaeology, from ring forts and cashels to field systems that predate written history by millennia, and not every site has yet received the attention it warrants.

Enclosures of this kind are among the most common, and most varied, monument types in Ireland. The term covers a wide range of structures, from the circular earthen banks of a rath or ring fort, which would have enclosed a farmstead during the early medieval period, to later oval or irregular enclosures associated with ecclesiastical sites, burial grounds, or agricultural use. Without more specific detail about Sessiagh's example, it is difficult to say which tradition this particular site belongs to, or what period it dates from. What can be said is that the townland name itself, Sessiagh, likely derives from the Irish "seiseach", a unit of land measurement historically associated with a sixth part of a ploughland, suggesting the area has been organised and named by people working the land for a very long time.

The honest position here is that the documentary record for this site remains thin. It is classified, it is mapped, and it exists in the field, but the fuller account of what it is and what it once held has not yet been made widely available.