It is not lying flat over a grave in the conventional way; instead it has been propped or set standing, which gives it an oddly monumental quality, more like a marker asserting itself than a stone quietly doing its commemorative work underfoot.

The slab dates to the thirteenth or fourteenth century and is one of a pair inside the nave, both positioned immediately east of the south doorway. It is a tapering piece of limestone, just over a metre visible above ground level and 0.67 metres across at its broader upper end, with a narrow chamfer, a shallow angled cut, running around its perimeter. The decoration on the east face repays close attention. A three-armed incised cross-head sits at the top, its terminals carved into lozenges and fleur-de-lis forms, the latter a motif associated with both sacred and heraldic traditions across medieval Europe. Beneath the cross-head is a circular knop, essentially a decorative boss rendered in two concentric incised lines, from which two curving lines sweep outward and upward on either side of the cross-shaft to connect back into the geometry of the lozenge above. The shaft itself is formed by two parallel incised lines, and where it meets the ground it simply disappears, the cross-base buried and unrecorded. That incompleteness, the carving continuing into the earth, gives the stone an unresolved quality that is quietly affecting.

The church of St. Martin at Templemartin is a medieval structure, and the graveslabs belong to a tradition of decorated funerary carving that was widespread across Leinster and Munster during this period, often commissioned for ecclesiastical patrons or local landholders of some standing. The quality of the incised work here, particularly the interlocking geometry of the knop and the cross-arms, suggests a craftsman working within a recognisable regional vocabulary rather than producing something purely improvised.