in greek mythology, evenus (; ancient greek: εύηνος "eúēnos") a river-god of aetolia as the son either of oceanus and tethys. in some accounts, he was represented as a mortal prince or king as the son of ares either by demonice, daughter of agenor or by the pleiad sterope. heracles was also called evenus' father in later versions of the myth. he was the brother of molus, pylus and thestius. eurytus married alcippe, daughter of king oenomaus of pisa by whom he became the father of marpessa.