Ἀμφικτυόνες

The Amphictyon is a Greek council, convened in Thermopylai↗. [The] Amphiktyons took their name from from Amphiktyon the son of Deukalion. For it was he, as king, who convened the peoples. They were twelve: Ionians, Dorians, Perrhaiboi, Boiotians, Magnesians, Achaians, Phthiotians, Molians,¹ Dolopes, Aenianians, Delphians, Phocians. But some say it is thus called from being neighbors to and convening in Delphi↗.
Also [sc. attested is the phrase] 'Amphiktyonic territory'; but 'Amphitryonic [sic] battle'.²
[The noun] Amphiktyon preserves [omega in the genitive, i.e.] *)amfiktu/wnos. But Amphiktyon shortens [its o to] *)amfiktu/onos.³