Celtic Gods: The Gaulish God, Agaunus, God of Water
Agaunus
A Gaulish god: God of the Flowing [one] or God of Water

This deity is known from a single inscription found at Vienna, Austria and is probably a water deity or a protector of those who travel on and by water.

Synonyms:
Gaul: ?God of the Flowing [One]/?God of Water

Agaunus is a god known from a single inscription found at Vienna, Austria, where he is invoked along with the Roman deities IOM [Jupiter Optimus Maximus], Neptune and the Nymphs as well as the Celtic gods Danuvius and Salacea. From his association with Neptune, the Nymphs and Danuvius (the patron deity of the Danube) it would seem highly probable that Agaunus is a water deity of some description. If the god's name is purely Celtic, then it can be derived from the reconstructed proto-Celtic roots *ag-e/o- (drive, but this is also the root of the verb 'to go'), the deific particle -un/on and the masculine ending -us giving an interpretation of 'God of the Flowing [One]'. Alternatively, if the name is Celto-Latin then the first component of the name may be derived from *akwā- (water), giving 'God of Water' or, more accurately 'Deified Personification of Water'.

As deities of bodies of water in Celtic mythos are invariably female this would indicate that Agaunus (being male) may be a protector god (his incvocation with Jupiter suggests this) and he may be a protector of those travelling by water.