King of the Wind is a novel by Marguerite Henry that won the Newbery Medal for excellence in American children's literature in 1949.

[2] As the fast of Ramadan is ending in Morocco, Agba, a mute slave boy, tends to his favorite Arabian mare, who gives birth that night.

Later, the Sultan summons six horseboys to his palace, including Agba, and charges them to accompany six horses to France.

A mare Lady Roxana, meant to be a mate for the horse Hobgoblin, arrives.

Two years later, the Earl's Chief Groom comes to see Agba and reveals that Lady Roxana gave birth to Sham's son Lath, who was left untrained.