Memorial slab carved in Ogam script

It's a little difficult to tell here, but if you look closely you can see engravings/markings on the edges of this stone, this is the Ogam to which they refer below. This stone was as tall as a grown man.

This is one of three Ogam stones reused in a medieval ring fort, Roovesmoor Rath, County Cork, Ireland. 5th century AD.

In Primitive Irish this reads 'Stone of Vedac, son of Tob of the Sogain'. Ogam script was invented in the south of Ireland in the 4th century and used by Irish settlers in Britain. The notched letters on the edge of the stone read anti-clockwise.