A small spring well tucked into a landscaped strip of parkland along the southern bank of the River Liffey in Kilcullenbridge carries two competing saintly identities, and nobody has quite resolved the disagreement. One historical account, from Fitzgerald writing at the turn of the twentieth century, records the well under the name Tubber-molin, linking it to St. Moling, a seventh-century bishop associated with the south Leinster region. Another account, from Jackson writing in the late 1970s, attributes it instead to St. Brigid and notes that a pattern was formerly observed there on the first of February. A pattern, in Irish tradition, is a localised devotional gathering held on a saint's feast day, often involving prayer, procession, and sometimes stations performed around a sacred site. February 1st is the feast of Brigid, which aligns with the older festival of Imbolc, so the date itself carries considerable weight as evidence.

The well today looks quite different from whatever it might once have been. In 1977 it was reconstructed, and a modern limestone sculpture by Fr. Henry Flanagan OP was installed above the spring, from beneath which the water still issues. A plaque beside the well marks both the reconstruction and the unveiling of the sculpture. The result is a layered object: an ancient water source, overlaid with twentieth-century stonework, sitting within a public park that most people walking along the Liffey might pass without particular notice. The question of whether the water belongs to Moling or Brigid remains, pleasantly, open.