The plaque, dated 1646, sits above a triple sedilia at the east end of the south wall of a chancel, a sedilia being the row of recessed stone seats traditionally used by clergy during Mass. Part of the monument remains in situ, while another section has ended up in the chapter house nearby, leaving the inscription fragmented across two locations.

The monument was erected in memory of Richard Stephenson and his son Oliver Stephenson, whose Latin epitaph describes both father and son as having been clerics of the choir, with Oliver noted as having died in 1642. The dedication was made by two women, Margaret Ni Brien and Elinora Browne, who commissioned the work four years after Oliver's death, in 1646. The inscription is framed in the elaborate style of its period: two narrow wall plaques are arranged with the upper one flanked by a crocketed gable, crockets being the leaf-like or bud-like projections used in Gothic decorative stonework, and the whole is decorated with geometric and floral designs. The monument was recorded by the antiquarian T. J. Westropp in 1903, and later appeared in the Memorials of the Dead series in the 1890s, before being catalogued as part of the Urban Archaeological Survey of County Limerick compiled by John Bradley, Andrew Halpin and Heather A. King for the Office of Public Works in 1985.

The monument's estimated dimensions, roughly 2.4 metres high and 0.7 metres wide, make it a substantial piece of funerary carving, though its divided state means that reading it fully requires moving between two parts of the building. Visitors interested in post-Reformation memorial stonework in Munster will find it a quietly telling example of how Latin epitaphs, elaborate architectural framing, and family commemoration continued in Irish ecclesiastical contexts well into the seventeenth century, even as the country around such monuments was being profoundly disrupted.