Beside it, within a raised oval graveyard enclosed by masonry walls, sits a granite cross-slab incised with a latin cross whose hollow angles give it an unusual, almost skeletal refinement, along with a fragment of what was once a baptismal font. The graveyard's raised profile is itself significant; this shape, often oval and elevated above the surrounding ground, is a recognised indicator of very early Christian enclosure in Ireland, suggesting continuous use of sacred ground across many centuries.

The site is associated with St Caomhán Santleathan, the name possibly meaning something like "wide saint", who is said to have founded a church here in the seventh century. His identity is contested across two distinct traditions. One places him as a brother of St Athracht of Killaraght in Co. Sligo, both of them descended from the Dál nAraidhe of north-east Ulster and converted by St Patrick himself. A second tradition ties him to the Uí Bairrche, a dynasty of north Carlow and Wexford, and records St Finnian of Clonard passing through the site on his journeys between Ireland and Wales. By 819, a place referred to as Darinish Caemhain, meaning the oak island of Caomhán, was plundered by Vikings alongside the nearby monastery of Begerin, suggesting the early community had grown substantial enough to attract raiders. The Annals of the Four Masters record the death of an abbot, Ciaran Mac Maol Dubh of Árd Caomháin, in 890, and that of an archdeacon, Ua Ruarcain, in 1055, indicating a functioning ecclesiastical hierarchy well into the medieval period. By 1615, when Thomas Ram, the Protestant bishop of Ferns, carried out a visitation of his diocese, the church had been appropriated to Henry Wallop; no priest is named in the record, and the state of the building goes unmentioned.

A holy well dedicated to St Cavan lies approximately 200 metres to the north-north-east of the graveyard. Until 1798, a pattern was held there each year on 12th June. A pattern, in Irish tradition, is a localised religious gathering held on a saint's feast day, combining prayer, procession, and often communal assembly around a well or other sacred site. The fact that this one ceased in 1798 is noted without explanation in the sources, though the turbulence of that year in Wexford would not need much elaboration for anyone familiar with the county's history.