A heraldic achievement is a formalised display of armorial bearings, typically combining a shield, a helmet, a crest, and a motto, and this one follows that convention with considerable precision. What makes it worth pausing over is the specificity of its imagery and the questions it quietly refuses to answer.

The shield is divided vertically into two halves, known in heraldic language as dexter and sinister, the right and left sides as they would appear to someone bearing the shield rather than facing it. The dexter half carries a chevron and two owls over one, while the sinister carries a chevron and two pheons, downward-pointing arrowheads associated with hunting and warfare, arranged in the same formation. Above the shield rises a crest consisting of a griffin, a creature combining eagle and lion, emerging from a wreath and set over a knight's helmet. The motto reads ADIVVA MEDEVS, a Latin phrase, and the stone is further marked with the initials IL and RA. The pairing of two sets of initials alongside a halved shield suggests this may commemorate a marriage, with each half of the shield representing a different family's arms brought together. The date 1607 places the monument in the immediate aftermath of one of the most turbulent periods in Irish history, just four years after the Flight of the Earls and at a moment when the established order of Munster was being rapidly reshaped.

The monument sits immediately east of the Hamilton wall monument within the same choir wall, so the two pieces form a kind of sequence along the stonework. The cathedral it occupies is the ruined medieval structure that crowns the limestone outcrop known as the Rock of Cashel, and visitors moving through the choir space will find this carved panel at eye level, easy to miss if attention has already been drawn to the more prominent features of the complex.