Eight ogham stones are built into the fabric of the medieval parish church of Seskinan at Knockboy in County Waterford, repurposed as lintels, the flat horizontal stones laid across doorways or windows. It is a quiet kind of recycling that speaks to centuries of pragmatic reuse, where earlier sacred objects were absorbed into later sacred structures without ceremony or apparent concern for what was being obscured.

Ogham is an early medieval script, most commonly found in Ireland and western Britain, in which letters are represented by a series of notches and strokes cut along the edge of a stone. The inscriptions are typically personal names, often read as memorials or territorial markers, and date broadly from the fourth to the seventh centuries. That eight such stones ended up as building material here points to an earlier ecclesiastical or ritual site on the same ground, one that has otherwise left no visible trace. The medieval church itself was raised on level ground, and whatever preceded it, whether an early Christian foundation or something older still, was effectively erased, its stones redeployed rather than preserved. The ogham stones are the sole surviving evidence that something came before.