The fragment, roughly 58 by 57 centimetres, is the upper half of a limestone slab decorated in relief with an interlace cross, the kind of knotwork pattern common to medieval Irish ecclesiastical carving. What makes it unusual are the details: the fleur-de-lys terminals on the cross arms are described as unusually small, and flanking the cross are a crescent moon on the left side and a sun on the right, a cosmological pairing that appears on medieval grave monuments as a reminder of the passage of time and the hope of resurrection. Around the edge runs a Latin marginal inscription in Black Letter script, the angular Gothic lettering used across Europe from the twelfth century onward, naming one Thomas Neal, though the rest of the inscription is fragmentary. Even the capital T of Thomas has been given the interlace treatment, suggesting a carver who took some care with the commission.

The slab almost certainly originated with the medieval church of St Nicholas of Myra, which stood on the western side of the town until around 1813, when it was demolished and replaced by a Church of Ireland building. That sequence, a medieval parish church surviving more or less intact into the early nineteenth century before being cleared for a newer structure, was not uncommon in Irish towns during the period of Protestant ecclesiastical reorganisation, and it often meant the quiet dispersal of older stonework into walls, floors, and field boundaries nearby. In this case, the graveslab of Thomas Neal ended up reused in the southern boundary wall of what is now recorded as Town Parks, its carved surface facing inward and its inscription incomplete, preserving just enough to suggest the person it once commemorated.