Tucked into the north-west corner of the burial ground are the ruins of a medieval Dominican abbey, a fragment of a once-organised religious community now absorbed into the practical geometry of a post-Reformation landscape. The Dominicans, a mendicant order of friars founded in the thirteenth century, established houses across Ireland during the medieval period, and the presence of such ruins here suggests this quiet corner of Limerick was once a site of some local significance.

The graveyard itself is a roughly rectangular enclosure, measuring approximately 39 metres north to south and 48 metres east to west, the whole surrounded by a stone wall that dates to after 1700. That wall, relatively recent by the standards of the site, contains something far older: the abbey ruins carry the archaeological record number LI056-042001-, indicating their formal recognition in the national monuments register. The eastern boundary of the enclosure is particularly notable for a different reason, as it traces the townland boundary between Aderrig and the neighbouring townland of Keale. It is not uncommon in Ireland for old ecclesiastical sites to anchor administrative boundaries that have persisted for centuries, the church's original land divisions having outlasted the institution itself. The site was compiled by Caimin O'Brien and uploaded to the record in July 2019.

The site is a working graveyard, so access is generally possible, though visitors should be respectful of that primary function. The abbey ruins occupy the north-west corner, which is where attention should be directed first; even in a fragmentary state, the outline of medieval stonework tends to be legible once you know to look for it. The point where the graveyard wall aligns with the Aderrig and Keale townland boundary on the eastern side offers a small but concrete illustration of how ecclesiastical geography quietly shaped the administrative map of rural Ireland.