Ogmios is the name given to a Celtic god of eloquence described in Heracles, a c. 175 CE work of the Syrian satirist Lucian.
Albrecht Dürer's rendition of the image of Ogmios which Lucian describes
1st-century CE curse tablet, now lost, perhaps invoking Ogmios to silence court witnesses.
Gold stater of the Armorican Veneti, with a head on which a hippocamp perches amid beaded strands
Ogham text on a sandstone rock
Hercules is the Roman equivalent of the Greek divine hero Heracles, son of Jupiter and the mortal Alcmena. In classical mythology, Hercules is famous for his strength and for his numerous far-ranging
Ogmios
…etymology linking Ogmios, Ogma, and Ogham poses unresolved chronological and phonological problems. Lucian's text was much read in the Renaissance, and "Gallic Hercules" (as Ogmios was known) inspired a number of artistic works, including drawings by Albrecht Dürer and Hans Holbein the Younger. Georges Dottin…
Hercules battles Achelous, metamorphed into a serpent, 1824, by François Joseph Bosio. Louvre LL 325.
Baby Hercules strangling a snake sent to kill him in his cradle (Roman marble, 2nd century CE, in the Capitoline Museums of Rome, Italy).
A fresco from Herculaneum depicting Heracles and Achelous from Greco-Roman mythology, 1st century CE.
Hercules and the Nemean lion in the 15th-century Histoires de Troyes