About Kermanshah In ancient Iranian mythology, construction of the city is attributed to Tahmoures Divband, the fabulous king of Pishdadian dynasty, however it is believed that the Sassanids have constructed Kermanshah. Bahram IV called Kirmanshah (later turned into the name Kermanshah in Modern Persian) gave his name to this city. It was a glorious city in Sassanid period about the 4th century AD when it became the capital city and a significant health center serving as a summer resort for Sassanid kings. In AD 226, following a two-year war led by the Persian Emperor, Ardashir I, against Kurdish tribes in the region, the empire reinstated a local Kurdish prince, Kayus of Medya, to rule Kermanshah. Within the dynasty known as the House of Kayus (also Kâvusakân) remained a semi-independent Kurdish kingdom lasting until AD 380 before Ardashir II removed the dynasty's last ruling member.