Ochall Ochne

[I] King of the sídhe of Connacht, whose swineherd was Friuch, who was in perpetual rivalry with Nár, the swineherd of Bodb Dearg of Munster.

Octriallach

[I] Son of Indech of the Fomorii, killed by Ogma at the second battle of Magh Tuireadh. He had been able to discover how Dian Cécht, the Dé Danaan god of medicine, was able to bring back the slain Dé Danaan to life by the use of a magical “Spring of Health.” Octriallach led the Fomorii in filling in the spring by placing great rocks over it.

Odras

[I] Daughter of Odarnatan, keeper of the hostel of Buchat Buasach. The Mórrígán turned her into a pool of water.

Ogham

[I] Sometimes Ogam. The earliest form of Irish writing, frequently referred to in Irish myths and sagas. Its invention is ascribed to Ogma, god of eloquence and literature. The sagas contain many references to great libraries of bark and wands carved with the Ogham script. However, the bulk of surviving Ogham scripts, dating from the fifth and sixth centuries a.d., are recorded on stones. There are 369 such inscriptions, some found in Wales, Scotland, and Ireland, but the bulk are in Ireland, and of these the highest density is in southern Ireland, with 121 of them in Co. Kerry alone. Mairtín Ó Murchu [The Irish Language, Dublin, 1985] suggests that Ogham originated in southwest Ireland. A text from the fourteen century, Book of Ballymote, is devoted to Ogham and gives an explanation of the characters. The most easterly Ogham inscription is recorded on stone at the site of Silchester. This was the tribal capital of the Celtic Atrebates (Calleva Atrebatum, according to the Romans), which, during the Roman occupation, became a walled town. After the occupation it would appear that Irish settlers, or early Christian missionaries, settled and put up an Ogham inscription. Then, with the invasion of the Anglo-Saxons, the Celts abandoned the town.

Ogma

[I] God of eloquence and literature. A son of the Dagda. He was skilled in dialects and poetry as well as being a warrior. He also had a role in conveying souls to the Otherworld. He was called Ogma Grian-aineach (of the Sunny Countenance) and Ogma Cermait (of the Honeyed Mouth). He is credited with the invention of the Ogham script. He is also credited with various children, of which his daughter Étain married the god of medicine, Dian Cécht. He ruled from the sídhe of Airceltrai.