eponymous archon

In ancient Greece the chief magistrate in various Greek city states was called eponymous archon (ἐπώνυμος ἄρχων, epōnymos archōn). "Archon" (ἄρχων, pl. ἄρχοντες, archontes) means "ruler" or "lord", frequently used as the title of a specific public office, while "eponymous" means that he gave his name to the year in which he held office, much like the Roman dating by consular years. In Classical Athens, a system of nine concurrent archons evolved, led by three respective remits over the civic, military, and religious affairs of the state: the three office holders were known as the eponymous archon (ruler of Athens, the highest political office in the city-state), the polemarch (πολέμαρχος, "war ruler", the commander-in-chief of the Athenian military), and the archon basileus (ἄρχων βασιλεύς...