High Quality Content by WIKIPEDIA articles Boris Fyodorovich Godunov (Russian: Borís Fyodorovich Godunóv, IPA: c. 1551 - 23 April 1605) was de facto regent of Russia from c. 1585 to 1598 and then the first non-Rurikid tsar from 1598 to 1605. The end of his reign saw Russia descend into the Time of Troubles.