Thousands are recorded across the country, and many remain in active use, marked by clootie rags tied to nearby branches, small offerings left on stone ledges, or simply a worn path through the grass where people have come and gone for generations. The one at Milltown in County Kilkenny belongs to this understated category of place: a site that has been formally recognised as a monument, carrying the weight of that designation, yet whose particulars remain largely undocumented in the public record.

Holy wells in Ireland typically predate Christianity, functioning as sacred water sources long before they were absorbed into the devotional calendar and assigned the name of a local saint. The practice of visiting them, known as "doing the rounds" or making a pattern, often took place on a saint's feast day and involved prescribed circuits, prayers, and the leaving of votive offerings. In many cases the well itself is modest in appearance, perhaps a stone-lined basin or a natural spring, with its significance residing in accumulated tradition rather than any architectural elaboration. Without detailed documentation for this particular site, it is difficult to say which saint, if any, is associated with the Milltown well, or what pattern day, if one was ever observed, might once have drawn people to it.