[1] The name Ogma is believed to originate from the Proto-Indo-European root *ak- or *ag- meaning "to cut," which refers to the method in which ogham was incised into stone and wood.

[2] Ogma is given three epithets in Irish Gaelic tradition: Grianainech “sun-faced” or “shining, radiant countenance” on p. 303 of the Táin Bó Cúailnge (The Cattle Raid of Cooley) and p.187 of Lebor Gabála Érenn (Book of Invasions); Trenfher “Strongman” or “Champion” in sections 59 and 162 of the Do Cath Mag Tuired (Second Battle of Moytura); and Griain-éigis “Shining sage or learned man” in section 12 of Foras Feasa ar Éirinn (History of Ireland).

Many scholars have credited The Dagda's son Cermait's epithet Milbel, or "honey-mouthed" or "eloquence" with Ogma, but this confusion seems to be an incorrect comparison by MacKillop [1].

[4] Which substantiates the reason that the Dagda gives Síd Aircheltrai to Ogma in De Gabáil in tSída (Taking of the Sidhe Mound) and is also referred to be in residence in Brecc on page 303 in the Táin Bó Cúailnge.

By virtue of his battle prowess and the invention of Ogham, he is compared with Ogmios, a Gaulish deity associated with eloquence and equated with Herakles.