Aeolis, the territory of the northernmost group of Greek immigrants to the western coast of Asia Minor, covering the coastal strip from the entrance of the Hellespont to the mouth of the Hermus—a linguistic and ethnographic, not a geographical unit. Near the end of the second millennium bce the Aeolians, deriving from *Boeotia and *Thessaly, planted their first settlements in *Lesbos, and thence expanded northwards to Tenedos, and along the mainland coast to the east and the south. There must have been considerable racial fusion with the local *barbarian inhabitants, but the Aeolians brought with them their own dialect (see dialects, greek) and created a distinctive style of architectural decoration. Most of the Aeolian cities derived their livelihood from agriculture, commerce being of minor importance in Lesbos. The settlements in the south may have formed a league, whose religious centre was the temple of *Apollo at Gryneum.