Сибирское ханство
The Sibir Khanate was administered by Mirzas who originated from various indigenous Siberian tribes. These Mirzas organized loosely knit dominions, which were all under the nominal authority of the "Khan" of Tyumen and Sibir. Mirzas also led the warriors of the Khanate of Sibir into battle and owed nominal allegiance to the "Khan" of Tyumen and Sibir.