They were not considered to be of the same blood as the Carians, and were, therefore, excluded from the temple of the Carian Zeus at Mylasa, which was common to the Carians, Lydians and Mysians, though their language was the same as that of the Carians proper.
Thus there was an Illyrian tribe Brygi, a Thracian one Bryges; some of the latter had passed into Asia and settled in the land called from them Phrygia, whence some of them later passed into Armenia; some of the Mysians (regarded by Strabo as Thracians) had also crossed into what was later known as Mysia: closely connected with the Mysians were the Dardanii, of Trojan fame, who had a city Dardania or Dardanus.
In the expedition of Xerxes, ten years later, he was in command of the Lydians and Mysians (Herod.
The existence of a tribe called Thyni in Thrace is well attested, and the two cognate tribes of the Thyni and Bithyni appear to have settled simultaneously in the adjoining parts of Asia, where they expelled or subdued the Mysians, Caucones, and other petty tribes, the Mariandyni alone maintaining themselves in the northeast.
But the confusion of the Leleges with the Carians (immigrant conquerors akin to Lydians and Mysians, and probably to Phrygians) which first appears in a Cretan legend (quoted by Herodotus, but repudiated, as he says, by the Carians themselves) and is repeated by Callisthenes, Apollodorus and other later writers, led easily to the suggestion of Callisthenes, that Leleges joined the Carians in their (half legendary) raids on the coasts of Greece.
Among thes~e tribes were the Carduchians in Zagros the Cossaeans and Uxians in the interior of Elam, the Cadusians and other non-Aryan tribes in northern Media, the Pisidians, Isaurians and Lycaonians in the Taurus, and the Mysians in Olympus.
Ancient writers agree in describing the Mysians as a distinct people, like the Lydians and Phrygians, though they never appear in history as an independent nation.
The subject allies who then fight under their banners include the Masu or Mysians and the Dardani of the Troad, while the Hittites have left memorials in Lydia.
The Mysians appear in the list of the Trojan allies in Homer and are represented as settled in the Calms valley at the coming of Telephus to Pergamum; but nothing else is known of their early history.