This one sits just eight metres from the R739 between Wexford town and Kilmore Quay, concrete-walled on three sides, open on one, and still holding water to a depth of around seventy centimetres. It appears on both the 1839 and 1940 editions of the Ordnance Survey six-inch map, where its name is printed in the gothic script traditionally reserved for antiquities. Whatever ritual life it may once have had, none of it is visible now.

The dedication is almost certainly to St. Catherine of Alexandria, a fourth-century scholar and convert whose story became one of the more dramatic in the early Christian martyrology. According to tradition, she debated and converted a group of pagan philosophers, was subsequently tortured on a spiked breaking wheel, and when the wheel miraculously shattered, was put to death by other means. That wheel became her enduring emblem in Christian iconography. Her remains were said to have been discovered in Egypt in the eighth century and translated to the monastery at Mount Sinai, which still bears her name. When portions of her relics reached Europe in the eleventh century, her cult spread quickly across the western Church. She was removed from the Roman Catholic calendar of saints in 1969 as part of a broader revision of questionable historical figures, then quietly restored in 2002. A ruined chapel also bearing her name stands roughly 220 metres to the north-north-west, suggesting this corner of County Wexford once formed a small but coherent devotional landscape around her memory.