Built into the wall of a graveyard in Lullymore, Co. Kildare, a small sandstone slab carries a detail that sets it apart from almost anything you might expect to find mortared into a boundary wall: above the head of a broad incised cross, what appears to be a shamrock leaf has been carefully carved into the stone. The slab itself is almost coffin-shaped, measuring 0.58 metres in length and widening from 0.2 metres at the foot to 0.32 metres at the shoulders, with the cross contained within a narrow incised margin. It is one of three such cross-inscribed stones still in place in this wall, each an early medieval carving that has ended up as casual building material in a much later structure.

The graveyard forms part of an early monastic site at Lullymore, and the stones it holds, or once held, hint at how substantial that collection once was. Catalogued by M. Kelly as 'Cross 11' in a 2006 study, this particular stone is among the survivors of what appears to have been considerable dispersal. Seven other cross-inscribed stones and two cross-slabs, cross-decorated flat stones that in early Christian Ireland often marked graves or served commemorative functions, were removed from the same graveyard and incorporated into a memorial erected in 1798. A further stone from the site now sits in the Bog of Allen Nature Centre Museum. The result is a scattered archive of early medieval carving, with pieces distributed between a commemorative monument, a museum, and the graveyard wall itself, where three remain embedded, still legible if you know what you are looking at.