They at first thought that Venus was two different stars, calling it Eosphoros when it was seen before sunrise and Hesperos when it appeared in the evening.
WSJ: 'Aladdin's Lamp'
2.
Venus is the only planet mentioned by Homer, who in the Iliad calls it Eosphorus when describing the funeral of Patroklos, and Hesperos when telling of the battle between Achilles and Hektor.