Herodotus: History

It is my belief that by acting in such a way he imitated his maternal grandfather, Kleisthenes, king of Sikyon. The tyrant, when he was at war with Argos, he put an end to the contests of the rhapsodists at Sikyon, because in the Homeric poems Argos and the Argives were so constantly the theme of song. He likewise conceived the wish to drive Adrastos, the son of Talaos, out of his country, seeing that he was an Argive hero. For Adrastos had a shrine at Sikyon, which yet stands in the market-place of the town. Kleisthenes therefore went to Delphi, and asked the oracle if he might expel Adrastos. To this Pythia is reported to have answered: "Adrastos is the Sikyonians' king, but you are a stone thrower (of men)." So when the god would not grant his request, he went home and began to think how he might succeed to expel Adrastos worship. After a while he hit upon a plan which he thought would succeed. He sent envoys to Thebes in Boeotia, and informed the Thebans that he wished to bring Melanippos, the son of Astacus, to Sikyon. The Thebans conceded,  and Kleisthenes carried Melanippos to Sikyon, assigned him a precinct within the government house, and built him a shrine there in the safest and strongest part. I must not forget to mention that the reason for his so doing was because Melanippos was Adrastos' great enemy, having slain both his brother Mecistes and his son-in-law Tydeus. Kleisthenes, after assigning the precinct to Melanippos, took away from Adrastos the sacrifices and festivals with which he had till then been honored, and transferred them to his adversary. The Sikyonians had paid extraordinary honors to Adrastos, because the country had belonged to Polybos, and Adrastos was Polybos' daughter's son; whence it came to pass that Polybos, dying childless, left Adrastos his kingdom. Besides other ceremonies, it had been their wont to honor Adrastos with tragic choruses, which they assigned to him rather than Bacchos, on account of his calamities. Kleisthenes now gave the choruses to Bacchos, transferring to Melanippos the rest of the sacred rites.

Such were his doings in the matter of Adrastos. With respect to the Dorian tribes, not choosing the sikyonians to have the same tribes as the Argives, he changed all the old names for new ones; and here he took special occasion to mock the Sikyonians, for he drew his new names from the words "pig," and "ass," adding thereto the usual tribe-endings; only in the case of his own tribe he did nothing of the sort, but gave them a name drawn from his own kingly office. For he called his own tribe the Archelaoi, or Rulers, while the others he named Hyatae, or Pig-folk, Oneatae, or Ass-folk, and Choereatae, or Swine-folk. The sikyonians kept these names, not only during the reign of Kleisthenes, but even after his death, by the space of sixty years: then, however, they took counsel together, and changed to the well-known names of Hyllaeans, Pamphylians, and Dymanatae, taking at the same time, as a fourth name, the title of Aegialeans, from Aegialeos the son of Adrastos. Thus had Kleisthenes the Sikyonian done.