Marked in gothic lettering on the six-inch sheets of 1839 and 1940, St. Keevil's Well once sat on flat, low-lying ground just south of the old Wexford to Rosslare road, in the townland of Ballybrennan Little. Holy wells in Ireland were typically gathering points for patterns, local religious festivals combining prayer, ritual, and communal celebration, and this one was no different. Around 1840, the scholar John O'Donovan recorded that the pattern here was held on 27 August.

The saint to whom the well was dedicated, known in Irish as Caoimheall, carries a quietly remarkable genealogy. She was the daughter of Caomhlugh and the mother of four saints, three of them, Daghán, Méanóg, and Molioba, with connections to County Wicklow. She is also reputed to have been the sister of St. Kevin of Glendalough, one of the most celebrated figures of early Irish monasticism. A church dedicated to her once stood in north Kildare, though its precise location is now unknown. That a single figure threads together Wexford, Wicklow, and Kildare in this way speaks to how densely interwoven the networks of early Irish sainthood were, with kinship, real or constructed, serving as a way of binding communities and their sacred sites across wide stretches of the country.

Today, the well itself is not evident on the ground. The probability is that the N25 improvements consumed it entirely, leaving only the cartographic record as evidence it ever existed. It is the kind of place that repays a moment's thought rather than a physical visit, a site whose interest now lies entirely in what has been lost.