They are the remains of a medieval effigial slab, the kind of carved tomb monument that typically shows a full-length figure of the deceased lying in repose. What survives here is only the lower half of a woman's body, rendered in careful relief: a heavy woollen skirt falling in regular parallel folds to her feet, its front lifted to reveal a smock beneath, and her feet resting on a tasselled cushion. The detail is precise and deliberate, the work of a sculptor who knew exactly what such objects were supposed to say about status and piety. What the library wall cannot tell you is whose tomb this was.

The fragments, designated Slabs A, C, and D by archaeologists, were found in 1990 during a survey of medieval churches in north Dublin carried out by Mary McMahon on behalf of the Dublin Archaeological Society. She and Henry Wheeler discovered them in the graveyard of Garristown church, where they had been repurposed as ordinary grave-markers, their original function effectively erased by later generations. Slab A, the largest at 1.18 metres long by 1 metre wide, preserves the lower portion of the female figure; Slab D, a corner piece roughly 0.6 metres by 0.3 metres, shows an angel beside a tasselled cushion; Slab C is a smaller corner fragment likely from the same original slab. McMahon dated the work to the fifteenth century and identified it as belonging to the Pale School of figure sculpture, a tradition associated with the Anglo-Norman territories around medieval Dublin. The connection is not merely stylistic guesswork: the treatment of the skirt and smock closely resembles the effigy of Maud Plunket at Malahide, dated to around 1440, and those of Margaret Jenico and Roland FitzEustace at St Audoen's in Dublin, from 1482, and of Anne Plunket and Christopher St Lawrence at Howth, from around 1462. Tasselled head-cushions of the same type appear at all three comparator sites.

The fragments are now permanently displayed inside Garristown Library, which makes them unusually accessible for objects of this age and fragility. For those who want to examine the carving more closely than the wall mounting allows, 3D models of both Slab A and Slab D are available online via Sketchfab. The raised border along the right margin of Slab A once likely carried an inscription, though no trace of lettering remains. The identity of the woman commemorated, the name of the sculptor, and the original location of the tomb chest within the church are all questions the stone cannot yet answer.