Holy wells are among the most numerous and most overlooked of Ireland's ancient monument types, numbering in the thousands across the island. They were, and in some cases still are, sites of pattern days, votive offerings, and localised devotion, often predating Christianity and absorbed into it gradually over centuries. The well at Cloonnagarnaun belongs to this long tradition, though the particulars of its history, its patron saint if it has one, its physical form, and the nature of any surviving customs associated with it, remain for now out of reach.

The source material available for this site is thin enough that anything beyond that bare fact would be speculation. What can be said is that Clare is a county with a particularly dense concentration of such sites, many of them tucked into field corners, beside old roads, or at the foot of hawthorn trees still hung with rag offerings. The townland name itself, Cloonnagarnaun, is Irish in origin, though without further documentary evidence it would be unwise to read too much into it. The well exists as a recorded monument, which means it was noted at some point as a feature of archaeological or cultural significance worth preserving in the record, even if the details behind that designation have not yet been made publicly available.