Строгановы
Following the Russian conquest under Ivan the Terrible, the Tatar khanate of Kazan became the Russian province of Perm. Ivan the Terrible had tremendous trust in the entrepreneurial prowess of the Stroganov family and granted them the province of Perm as a financial investment which would be sure to benefit Russia in the future. The tsar also gave the Stroganovs permission to expand into the territory along the Tobol and Irtysh Rivers which belonged to the Muslim leader Kuchum Khan. The Stroganovs proceeded to launch expeditions eastward into non-Russian territories. They pushed into the khanate of Sibir, the sister state of the former khanate of Kazan, because it maintained control over Siberia's fur in the west.