The slab measures just over two metres in length and slightly more than a metre in width, and its surface carries a seven-armed segmental-headed cross worked in relief, its terminals finished in fleur-de-lis. A three-barred knop, a small decorative knob, sits at the base of the cross-head, and another marks the base of the shaft where it meets a pillar-form base. Running around the margin is a Latin inscription in Gothic script, the lettering deliberate and formal, made to last.

The inscription names Thadeus Donall O'Meagher of Ballidiul and Anastatia Purcell, his wife, and records that they caused the monument to be made on the 20th of May, 1600. It is a formula familiar from medieval memorial culture, where the commissioning couple appear in the text as patrons rather than simply as the deceased, asserting a kind of agency even in their own commemoration. The inscription has attracted scrutiny over the years: a transcription published by Brennan in 1863 was later judged inaccurate by Maher, writing in 1997, whose own reading of the Latin text is now the more trusted version. Knowles, in 1903, provided the English translation that still circulates. The slight uncertainty around one letter in the wife's surname, rendered as PUR(R?)TIA in the Latin, is a small reminder of how much medieval epigraphy depends on the condition of stone and the patience of those who read it.