The Ionian were thought to have been founded later

Chandler's Encyclopedia · 1898 · p. 21
Ionians, driven from n. Peloponnesus by Achæans, found Attica too narrow for them, and began to occupy the islands to the e. Between 1000 and 800 B.C. settlements were made on the Asiatic coat and islands, and an a ociation of 12 cities was organized, embracing Miletus, Phocæa, and Samos. By 780 Miletus began to send out colonies to the Pro pont is and the Euxine. The Dorian i ued from Peloponnesus during the Dorian conquest of the peninsula. They took po e ion of the s. Cyclades, Rhodes, Cos, with other islands, and a section of the adjoining mainland. These 3 groups of colonies were reduced by the kings of Lydia between 700 and 565 B.C., the Æolian group retaining their independence till the time of Cræsus. In the two latter groups there was a considerable admixture of other races.
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