No walls, no earthworks, no hollows in the ground where a house once stood. What survives of a medieval settlement that once clustered around the castle of Cappercullen exists only in documents, the most telling of which is a mid-seventeenth-century survey entry describing the place as having 'A Castle two Thatched House and some Cabbins.' That handful of words is now the clearest picture anyone has of a small community that has since been entirely swallowed by the landscape of what is today the Glenstal Abbey estate in County Limerick.

The history of who held Cappercullen and when tells a familiar story of plantation-era transfers and forfeitures. The lands had belonged to the O'Mulrian family, specifically to one Conogher mac Edmund mac Lysagh O'Mulrian, before passing in 1604 to Theobald Baron Bourgh of Castleconnell by royal grant. By 1641, the proprietor of record was Colonel Pierce Walsh of Abbeyowney, whose holdings at what the survey calls 'Cappacullyn' amounted to 261 acres of profitable land and a further 33 acres of bog. Following the upheavals of the 1640s and 1650s, the castle and lands were forfeited and granted in 1667 to a George Evans. The Down Survey itself, a vast mapping project carried out in the 1650s to apportion confiscated Irish land, is where the settlement's brief written description appears, in the terrier, a written companion document to the parish map, for the parish of Abbeyowneybeg. Around 1680, a walled garden was constructed to the west of the castle, and it is thought this garden may have been laid out directly over the footprint of the old settlement, erasing whatever physical traces remained.

The walled garden is now part of the Glenstal Abbey estate, a Benedictine monastery not generally open to casual wandering, so access to the immediate area is limited. The site is of interest less as somewhere to walk than as an exercise in reading absence: the ground gives nothing away, and the significance of the place depends entirely on knowing what the documents say was once there. Researchers or those with a particular interest in the plantation period and the Down Survey maps, which are held at the National Library of Ireland, will find more to engage with in the archive than on the ground.