The head has been broken off, the hands defaced, and the lower portion of the slab is gone entirely. What remains is still legible enough to read: a figure in high relief, his left arm drawn across his chest clutching a fold of his mantle, his right gloved hand holding the other glove and the mantle string, his hair dressed below the ears. A trefoil canopy, the arched decorative frame carved above the figure, survives in badly damaged form, supported by a small corbel, with leaves curling up from the border on one side. The other edge is left with a plain chamfer. It is a fragment, clearly, but a precise and once-accomplished one.

The slab dates to the late thirteenth century and was originally laid on the north side of a church belonging to the Franciscan Friary in Cashel town, specifically within the Hackett chapel. The Hackett family were among the founders and principal patrons of that chapel, and a Franciscan chronicler named Wadding, writing in 1734, recorded that many tombs of the founders and their associated families had been visible there. When the friary was demolished, the effigy was moved to the grounds of a convent that later occupied the same site, before eventually being transferred to its current home on the Rock. The figure's identity is not recorded, but given its location within the Hackett chapel and the quality of the carving, a connection to that founding family seems probable. The effigy measures 1.31 metres in length, tapering from 0.71 metres wide at the top to 0.57 metres at the surviving lower section.