Wikipedia
Kasranids
The Kasranids were a branch of the Shirvanshahs, who ruled the Shirvan region of the Caucasus for 387 years. The word "Kasra" was derived from legendary king Kai Khosrow of Iran, reflecting a shift in naming tradition from Arabic to Persian. The Kasranids name was part of an effort to break with their Arabic roots by claiming to be successors of the Sassanids and the Kayanian dynasty.