At the top of that same rock is a small alcove, deliberately shaped to cradle two round stone amulets known locally as bauleys. The arrangement is unusual enough on its own, but the bauleys carry their own freight of tradition: they were said to have been blessed by St Erc, and are believed capable of curing all evils and ills. One of the pair remains in the graveyard; the other is kept by the Corridan family, who hold exclusive burial rights to the site. The prescribed use is precise: water drawn from a nearby holy well is placed in a vessel together with a bauley, and the water is then drunk in honour of St Erc.

The folklore collected from Glenderry School layers further detail onto the site. One account calls the church the Church of the Son of David and notes that the stone outside the churchyard, if taken away, would return by the following day. Another account, referring to the same location as Keelmicada, describes a monastery that was destroyed by unnamed enemies, with the monks carried off and only the bishop escaping. That bishop, Erc, is said to have later witnessed a light crossing the sea and followed it to the moment of St Brendan's birth, a detail that ties the site into one of the most enduring legends in early Irish Christianity. Both accounts agree on one particular: no one is buried there except the Corridons, and a light or a cry is heard before any member of that family dies, whether at home or abroad. The mound, measuring 3.2 metres by 3.2 metres and sitting roughly three metres from the east gable of the ruined church, is described in the school folklore as covering the bishop himself.