Zephyrus
The god of the west wind. 
He was the son of the Titan Astraeus and of Eos, 
the goddess of the dawn.
 Zephyrus was said to be the husband of his sister Iris, 
the goddess of the rainbow, 
or the husband of his sister Chloris, 
the goddess of spring (a la the Roman Flora). 
His brothers were Boreas and Notus, 
the gods of the north and south winds, 
respectively. He was the father of Carpus, 
Xanthus and Balius. 
In some versions he fathered Xanthus 
and Balius (Achilles' horses) by the Harpy Podarge,
 another of his sisters.