Zephyros

Zephyros (Ζεφυρος in Ancient Greek) is the god and personification of the west wind. He is the god of Autumn and one of the four great winds that serve Aeolus. His Roman counterpart is Favonius.

History
Zephyros was born to the Titans, Astraeus and Eos. In Greek times, he dwelt with Boreas in the Thracian mountains. Like many gods, Zephyros had a share of romantic escapades despite his marriage to either Khloris or Iris, becoming the father of several immortal children. In regards to Khloris, who was a nymph of the isles of the blessed it was said that he gave her dominion over flowers and essentially made her the goddess of flowers. With Iris he had a son, Pothos, the god of sexual longing, desire and yearning and an attendant of Aphrodite.

The Lightning Thief
Annabeth tells Percy that Zephyros sent her down from Olympus on orders from her mother to be raised by her father.

Favonius
As Zephyros' Roman form, Favonius, he becomes more warlike and militaristic.

Trivia

 * The west wind was said to be the most favourable of the four.
 * Zephyros was said to be the bringer of the Spring Winds.
 * He has close ties with his brother, Boreas as both lived together in the time of Greece.
 * He was also called Zephyr.
 * The creek that runs through the forest in Camp Half-Blood is named after him.
 * He is the wind god that appears in Botticelli's painting, The Birth of Aphrodite.
 * Zephyros was said by Annabeth have sent her down in a golden cradle to her father when she was baby, by her mother Athena.