A single stone, just over two metres long and less than half a metre high, carries three round-headed arches side by side, each finished with hollow mouldings on either side. It is the kind of detail that belongs above an altar or beside a tomb, not underfoot beside a garden pool.

The stone is believed to have come from a wall tomb associated with the White family, probably cut in the seventeenth century and originally installed in the White mortuary chapel at St. Mary's Church in Clonmel. A mortuary chapel was a private funerary enclosure, often built against the nave or chancel of a parish church, where a family would be buried and commemorated. When that chapel was dismantled in the early nineteenth century, the carved stone was moved to the church at St. Patrick's Well rather than discarded. There it sat at the east gable of the church interior, visible enough to be sketched and included in Burke's History of Clonmel, published in 1907. Then, during works carried out between 1967 and 1969 to improve the site around the church and the well, the stone was moved again, this time to its current position in the structure of the footbridge, as recorded by Shee and Watson in 1975.

The arches are still there to be seen if you know to look for them, incorporated into the bridge over the pond outlet rather than displayed as a monument in their own right. The hollow mouldings along each arch are a small but precise detail, the kind that a mason would have taken care over when the work was intended as a memorial. Whether the stone will be recognised for what it is by most people who cross the bridge is another question entirely.