Antigonis and Demetrias

Antigonis and Demetrias (Ancient Greek: Ἀντιγονίς, Δημητριάς) were two tribes (phylai) added by the ancient Athenians, in this order, to the previous list of 10 Athenian tribes in the year 307–306 B.C., sometime after the fifth prytany. The names of the tribes were chosen to honor Macedonian king Demetrios Poliorketes and his father, Antigonos I Monophthalmos, by adding them to the list of Eponymous Heroes of Athens, effectively making them into gods. This change followed Demetrios expelling Kassandros from Athens and the end of the semi-oligarchic rule of Demetrios of Phaleron in 307 B.C. In 200 B.C., when Athens was involved in the Second Macedonian War against Macedon, the Antigonis and Demetrias phylai were disbanded, and public inscriptions about them erased.

While Athenians added the new phylai to the top of their list, modern researchers use Roman numerals XI and XII to designate Antigonis and Demetrias respectively.