os, the goddess of the dawn, sister of Helios and Selene, was the mother by Astraeus, of the winds: Zephyrus, the west wind, Boreas, the north wind, Notus, the south wind and Eurus, the east wind. Eurus is generally not mentioned as one of their children.

Aeolus and his queen, Enarete, had been appointed regents over the winds, although they were not related to them. Their home was on the island of Aeolia. Eos and Astraeus were also the parents of Eosphorus, the morning star; Hesperus, the evening star; and Phosphorus who was also called the morning star; and of all of the stars in the heavens.

By Tithonus, the son of Laomedon, king of Troy, she was the mother of Memnon, later the king of Ethiopia, and Emathion. so much did Eos love Tithonus that she begged Zeus to make him immortal. the god assented, but since she had not asked for eternal youth, time made its mark on Tithonus and he lived on and on, feeble both in mind and in body. Eos locked him in a chamber, where he babbled on incessantly. Finally, in pity, Eos turned him into a cricket.

Eos appeared in one version of the legend of Phaethon, here her son by Cephalus, as drawing the clouds of night aside for his reckless journey over the heavens.