Paeon[pronunciation?] or Paion (Ancient Greek: Παίων, gen.: Παίονος), in Greek mythology, was an Elean prince as son of King Endymion, and brother of Epeius, Aetolus, Eurycyda[1] and possibly Naxos.[2] From him, the district of Paeonia, on the Axius river in Macedonia, was believed to have derived its name.[3]