Рюриковичи
Beginning with the reign of Ivan the Terrible, the Muscovite branch used the title "Tsar of All Russia" and ruled over the Tsardom of Russia. The death in 1598 of Tsar Feodor I ended the rule of the Rurik dynasty. The dynasty was briefly revived in the person of Vasili IV of Russia, a descendant of Shuyskiy line of the Rurik dynasty, but he died without issue. The unstable period known as the Time of Troubles succeeded Feodor's death and lasted until 1613.