_a._ The importance of Thessaly in the earliest history of Greece, may be gathered from the principal data enumerated above for the history of the Pelasgi and the Hellenes. From this country it was that the Hellenes proceeded and spread over Greece; and here likewise they maintained their original seat. In the Trojan age Thessaly contained ten small kingdoms, governed by hereditary princes, several of whom, such as Achilles and Philoctetes, were among the most renowned heroes of the time. In the period subsequent to the Trojan war and the Dorian migration, Thessaly must have experienced political revolutions similar to those of the other Grecian countries; but neither the time nor the manner in which those revolutions occurred can be ascertained. All that can be deduced from the subsequent history is, that if the Thessalian cities ever did recover their political freedom, they were unable to maintain it; for in the two most eminent cities, Pherae and Larissa, with whose history that of the whole country is closely connected, the supreme power had fallen into the hands of arbitrary individuals, who appear to have kept possession of it almost without interruption. Even before the breaking out of the Persian war, Larissa was under the rule of the Aleuadae; a family who claimed descent from Hercules, and are specially denominated by Herodotus kings of the Thessalians. They preserved their power until the Macedonian period.--In Pherae there arose about the year 380, a tyrant, by the name of Jason, who extended his dominion not only over Thessaly, but likewise over several of the neighbouring barbarous tribes. The sceptre of Jason passed rapidly and successively into the hands of his three brothers, Polydorus, Polyphron, and Alexander. The last was first driven out of Larissa by the Aleuadae, assisted by the Macedonians; was afterwards worsted in war by Pelopidas; and finally, at the instigation of his wife Thebe, was murdered, 356, by her brothers, Lycophron and Tisiphonus. The two murderers then assumed the supreme power, but were, in compliance with the request of the Aleuadae, deposed by Philip of Macedon.--Some other such tyrants are met with at intervals in the rest of the Thessalian cities, such as _Pharsalus_, etc.