The one at Killeely Beg, in County Galway, is among the quieter examples of this type, recorded as a monument but sitting at the margins of documented history, the kind of site that appears on lists without quite explaining itself.

The tradition of holy wells in Ireland stretches back well before the arrival of Christianity, when natural springs were venerated as liminal places where the boundary between the everyday world and something less tangible was thought to be thin. When Christianity took hold, many of these sites were rededicated to local saints, and the older rituals, including the practice of walking a prescribed circuit around the well, known as making the rounds or completing the pattern, were folded into the new religious framework. Killeely Beg itself is a small townland in Galway, and like many such places its name preserves older layers of meaning, the element "kill" deriving from the Irish "cill", meaning a church or monastic cell, suggesting some early ecclesiastical presence in the area.

The specific history of this well, its patron saint if it had one, the dates of any pattern day, the nature of any offerings or cures associated with it, remains for now unrecorded in any publicly available form. That absence is itself worth noting. Across Ireland, hundreds of holy wells continue to exist in varying states of use, neglect, or quiet tending by local communities, largely outside the reach of formal documentation.