The slab measures just over two metres in length and three quarters of a metre wide, oriented east to west in the manner customary for Christian burial. What makes it quietly arresting is the inscription itself: raised Roman capitals running around the entire perimeter, a deliberate and formal choice, now worn in many places to near-illegibility. What survives reads, in part, "THIS IS THE ANCIENT TUMBE OF ROBE" before the text dissolves into uncertainty. Even when the stone was new, whoever commissioned it chose to call the burial an "ancient" tomb, which suggests the slab was marking something already considered old, or that the phrasing was invoking a sense of lineage and continuity rather than simply recording a recent death.

Quin Abbey itself is a Franciscan friary founded in the fifteenth century, built in part using the walls of an earlier Anglo-Norman castle, and the graveslab sits within that layered context. The fragment "ROBE" is most likely the beginning of a personal name, possibly Robert or a similar form, though the stone does not yield enough to say with confidence. Raised Roman capitals of this kind were a common choice for memorial inscriptions in late medieval and early modern Ireland, offering a sense of classical permanence, but the combination of English-language text and that self-consciously retrospective word "ancient" points to a period when such slabs were being used to assert family claims as much as to mark a grave. The identity of the person commemorated remains, for now, unresolved.