It marks the resting place of John White and his wife Johanna, and its obscurity is purely accidental: the stone has simply been covered over, its carved surface pressed against the underside of the floor while the world carries on above it.

The slab itself is described as bearing a cross with a crown of thorns, the instruments of the Passion, and two heraldic shields, one on either side of the cross shaft. The left shield carries the White family arms, a chevron with three roses, though the stone is so badly worn that finer details such as engrailing, the notched decorative edging sometimes used on heraldic lines, can no longer be confirmed. The opposite shield, presumed to belong to Johanna, appears to show a lion passant gardant, a heraldic pose meaning a lion walking with its head turned to face the viewer, with the initials T.C. A third coat of arms reported by an earlier researcher cannot be verified given the current condition of the stone. Around the border runs a Latin inscription, poorly preserved but transcribed and translated to read that John White was mayor twice: first during the viceroyalty of Thomas Wentworth, the Lord Deputy of Ireland, and second at the outbreak of the Confederate Catholic War, the mid-seventeenth-century uprising in which Irish Catholics sought to retain political and religious rights in the face of parliamentary pressure. He died on 26 August 1643, his death falling right at the moment Ireland was fracturing into years of conflict. The inscription's phrase "icy marble" carries an elegiac formality typical of Latin funerary verse, framing his burial as a kind of cold and permanent stillness beneath the stone.

The slab sits in the south-west angle of the south aisle. Whether it remains accessible or visible to visitors would depend on arrangements within the church itself, but anyone with a particular interest in seventeenth-century Tipperary civic life, or in the material culture of the Confederate period, would find this overlooked stone worth seeking out.