These places are known in Irish as cillíní, singular cillín, and they occupy a particular and painful corner of social and religious history. For centuries, unbaptised children, along with others considered to exist outside the full rites of the Catholic Church, could not be buried in consecrated ground. Instead, they were laid to rest in liminal spaces: old ringforts, cliff edges, tidal margins, and unconsecrated plots like this one. The graves were rarely marked with anything permanent, which is part of why so many of these sites remain poorly documented.

The practice was widespread from the medieval period through to the mid-twentieth century, shaped by the theological doctrine that unbaptised infants could not enter heaven and so were consigned to a state called limbo. Families who had lost a newborn, a stillborn child, or an infant who died before baptism had little choice in the matter. The burial was typically carried out quietly, at night or at dawn, by the father or a small group of men, without a priest present. The cillín at Askillaun fits within this tradition, a small and likely unmarked site that served the surrounding community during the long period when such arrangements were the only ones available to grieving parents in rural Ireland. The Catholic Church formally withdrew the concept of limbo as a doctrinal teaching in 2007, but the physical traces of the practice remain across the country.

Because detailed site-specific records for this particular location have not yet been made publicly available, the precise extent, condition, and history of the Askillaun cillín remain unclear. What is known is that the townland sits in a remote part of Mayo, a county that contains a significant number of such sites, many of them still unexcavated and unstudied in any formal sense. Anyone visiting should approach with care and awareness of what the ground represents.