Feodor_I_of_Russia--Czar_of_Russia_Alexander_I

Fyodor I Ivanovich (Russian: Фёдор I Иванович) or Feodor I Ioannovich (Феодор I Иоаннович; 31 May 1557 – 17 January 1598), nicknamed the Blessed (Блаженный), was Tsar of all Russia from 1584 until his death in 1598.
Feodor's mother died when he was three, and he grew up in the shadow of his father, Ivan the Terrible. A pious man of retiring disposition, Feodor took little interest in politics, and the country was effectively administered in his name by Boris Godunov, the brother of his beloved wife Irina. His childless death marked the end of the Rurik dynasty, and spurred Russia's descent into the catastrophic Time of Troubles.
He is listed in the "Great Synaxaristes" of the Orthodox Church, with his feast day on January 7 (OS).