Kayus or Kâvos was the name of a Kurdish prince who ruled the Kâvusakân Dynasty (House of Kayus) in AD 226. Kayus was reinstated king of the Median Kurds following a two-year war between an array of united Kurdish kingdoms and the Persian Sassanian Empire. Kayus was known as King of the Median Kurds and ruled as an autonomous tributary king in the Kermanshah

Kermanshah

Kermanshah is a city in and the capital of Kermanshah Province, Iran. At the 2006 census, its population was 784,602, in 198,117 families.The overwhelming majority of Kermanshahi people are Shi'a Muslims...

 capital. The kingdom stretched across central and southern Kurdistan and lasted until AD 380.

Sources

• Izady, Mehrdad R., The Kurds: A Concise Handbook. Washington, DC: Taylor & Francis, 1992.
• Afshar, Iraj, Kermanshahan and Its Ancient Civilization. Tehran, 1992.