ogam

The inscriptions upon such stones, when they are inscribed, are usually in Ogam or Runic characters.

It bears an Ogam inscription on two angles of the same face, and debased Roman characters on the front and back.

The language of the Ogam inscriptions is the oldest form of Goidelic with which we are acquainted.

It may, however, be regarded as certain that the Ogam script was never employed in early times for literary purposes.

Ogam, a sort of writing, often used on sepulchral stones to mark the names of the persons buried.