Known in the ‘Iliad’ only for the oracle of Dodona, and to Herodotus for the oracle of the dead at Ephyra, Epirus received Hellenic influence from the Elean colonies in Cassopaea and the Corinthian colonies at Ambracia and Corcyra, and the oracle of Dodona drew pilgrims from northern and central Greece especially.

Theopompus knew fourteen Epirote tribes, speakers of a strong west-Greek dialect, of which the Chaones held the plain of Buthrotum, the Thesproti the plain of Acheron, and the Molossi the plain of Dodona, which forms the highland centre of Epirus with an outlet southwards to Ambracia.

A strong Molossian state, which included some Thesprotian tribes, existed in the reign of Neoptolemos c.370-368 (“Arx.Ef”.1956, 1ff). The unification of Epirus in a symmachy led by the Molossian king was finally achieved by Alexander, brother-in-law of Philip II of Macedon. His conquests in southern Italy and his alliance with Rome showed the potentialities of the Epirote Confederacy, but he was killed in 330 BC