Dmitry Ivanovich was the youngest son of Russian tsar Ivan the Terrible. He was the tsarevich for close to seven years of his half-brother Feodor I's reign. After his death, he was impersonated by a number of imposters to the throne, during the Time of Troubles.

Fyodor I Ivanovich or Feodor I Ioannovich, nicknamed the Blessed (Блаженный), was Tsar of all Russia from 1584 until his death in 1598.