north wind

"Boreas was the purple-winged [greek] god of the north wind, one of the four directional Anemoi (wind-gods). He was also the god of winter, who swept down from the cold northern mountains of Thrake, chilling the air with his icy breath. To the north, beyond his mountain home, lay Hyperborea, a land of eternal spring which was never touched by the god's cold wind.

"Boreas and his brother winds were often imagined as horse-shaped gods."

--http://www.theoi.com/Titan/AnemosBoreas.html