Definition
DESCRIPTION
The script originally contained twenty letters grouped into four groups of five. Five more letters were later added creating a fifth group. Each of these groups was named after its first letter. There are some four to five hundred surviving ogham inscriptions throughout Britain and Ireland with the largest number appearing in Pembrokeshire. The rest of the inscriptions were located around south-eastern Ireland, Scotland, Orkney, the Isle of Man and around the border of Devon and Cornwall. Ogham was used to write in Archaic Irish, Old Welsh and Latin mostly on wood and stone and is based on a high medieval Briatharogam tradition of ascribing the name of trees to individual characters. The inscriptions containing Ogham are almost exclusively made up of personal names and marks of land ownership.
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