Deiros, Lord of Horses is the son of Targus and Arilla, mother of animals. After Tarjek the Bold kills Hirven the great wyrm, he finds a bridle within its body. The Targites become masters of horses and herders of beasts.
Deiros origin is told in the story "The Nomads".
He also participates in the struggle against the Storm Gods, as told in the story "There will be blood"