In C.S. Lewis’s Narnia, the Tisroc rules the land of Calormen.
Calormen is a large southern empire in the Narnia stories, especially in The Horse and His Boy. Its ruler is the Tisroc, a title used by the Calormene monarchy. The society has its own language, customs, religion, and political hierarchy, making it distinct from Narnia and Archenland.
The Horse and His Boy follows Shasta and Aravis as they flee Calormen and travel north. Their journey eventually connects them with Narnia and reveals the political ambitions of Prince Rabadash, the Tisroc’s son.
Calormen is often mixed up with Archenland, the neighboring kingdom north of the desert, or Telmar, a different land associated with Narnia’s history. Bree is not a country at all; Bree is a talking horse who travels with Shasta.