Ogmios is a vaguer deity than the Irish god Ogma. Most of what we know about him comes from the Roman writer Lucan, who called him Hercules and described him as a master of persuasion and rhetoric. One inscription seems to record a dedication to him in fulfillment of a vow, and two curse tablets invoke him.
The Irish god Ogma combines aspects of Mercury and Hercules – he is the inventor of the ogham writing system and an orator and poet, but he is also the champion of the deities, their official warrior.
The god who is willing to play a high price for justice, for the protection of his tribe, is found in many Indo-European religions. In the Irish pantheon we find Nuadhu, often known as Nuadhu Airgetlam (Silver Hand or Arm)…
The Irish god Nuada is known for three things: his magical sword, his sliver arm, and losing the kingship twice. HIs losses, however, define him in ways that show his quality.
It may seem strange that in Roman times the British god Nodens, famous for his healing shrine, was associated with Mars, a god more likely to do damage than to cure it. However, other Celtic “Mars” gods such as Lenus and Ocelus were healers, and not just to soldiers or men, but women and children.
The god Toutatis occupies a interesting place in the Gallic pantheon. His name, which means “of the tribe,” could equall well be a title, perhaps hiding another name. Against this, however, we have many artifacts, espeically rings, with his name on them, suggesting it was the commonly-used name for this god.
He is best-known from the Roman writer Lucan, who counts Taranis, Esus and Toutatis as notable for their desire for blood. (And presumably because they were major Gaulish gods.) Although it’s tempting to see them as a Gaulish answer to the Roman Jupiter, Mars and Quirinus, there’s no evidence to back this.