It’s mentioned in an ancient treatise on grammar, Auraicept na n-Éces (“Instruction of the poets”), thought to date from the ...

Ms Gilmore said another theory was that it could have been used by Irish tradesmen to make contact with each other. The team said Ogham was highly unusual among world writing systems, consisting ...

However, the lines were actually carved in ogham, an alphabet used to write the early Irish language after the fourth century. From the sixth to ninth centuries, it was used to write Old Irish.