Agrinion was founded by Agrius, a son of Porthaon, king of Calydon in Aetolia. His was not a particularly loving family. His brother, Oeneus (“wine man”) succeeded their father as king of Calydon but two of Agrius’ sons overthrew him and put him in jail. Then they gave the kingdom to their father. Their reign did not last very long, though, for Diomedes, Oeneus’ grandson, deposed them and put his grandfather back on the throne. Nothing more is heard about Agrius. It should be noted, here, that Diomedes’ father was no angel either, for he ate the brains of his enemies. As a result, he lost the favour of goddess Athena, who refused to offer him an elixir that would make him immortal.