A small spring well sits at the northern end of a graveyard at Killeighter, Co. Kildare, six metres south of the old church, its stone surround barely rising above ground level. Three shallow steps lead down into an oval basin, roughly two and a half metres across, and from there a culverted pipe carries water northward to a stock trough on the outer face of the graveyard wall. It is the kind of arrangement that blurs the sacred and the practical in a way that feels distinctly Irish, the same water serving both devotional and agricultural purposes without any apparent contradiction.

The well does not appear on the first edition Ordnance Survey six-inch map of 1838, though it is mentioned in the Ordnance Survey Letters, the nineteenth-century field notes compiled by surveyors who recorded local lore and placename traditions alongside their cartographic work. What the well was believed to cure seems to have shifted depending on who was asking. Jackson, writing in 1979 to 1980, recorded that it was visited for headache cures and had no associated pattern, the term for the traditional festive gathering held at a holy well on a saint's feast day. O'Donoghue, writing in 1999, gives a different account: that the well was visited on St Patrick's Day and was associated with curing eye ailments. In 1993, it was refurbished using dressed stone taken from the nearby church, which means the fabric of the well now contains material from the ecclesiastical building it stands beside. A holy tree stands immediately to the south, completing a small cluster of related sacred features within a compact and quietly layered site.