In a roadside garden in the Kildare townland of Tobercocka, a small oval pond sits fenced off from passing traffic, its dimensions modest enough that you could pace around it in seconds. What makes it quietly arresting is what it once was: a holy well with a very specific purpose. People came here not for the usual range of ailments that Irish holy wells were traditionally credited with healing, but for mental illness, a cure associated with the water through local tradition and recorded into the twentieth century.

The well shares its name with the townland itself, Tobercocka, the word tobar being the Irish for well, which gives some sense of how central the site once was to the identity of the place. Writing in 1919, a Fitzgerald noted that the well, though no longer visited for cures at that time, retained its status as a blessed well. A later account by Jackson, writing in the late 1970s, preserved the older tradition more fully, recording both the well's association with curing mental illness and the fact that a patron was held there on the eighth of March. A patron, in this context, refers to a pattern day, the anglicisation of the Irish lá an phátrúin, a festive gathering held annually at a sacred site, typically on the feast day of its associated saint, combining religious observance with communal celebration. The March date suggests a dedication that predates or sits outside the more common summer pattern-day calendar. Today the well retains some of its physical character, with stone lining still visible at the southern end of the pond, even as the surrounding landscape has long since absorbed it into the ordinary fabric of a garden.