False Dmitriy I (1600–1606)
Born 1600 CE, died 1606 CE.
False Dmitry I or Pseudo-Demetrius I (Russian: Лжедмитрий I, romanized: Lzhedmitriy I) reigned as the Tsar of all Russia from 10 June 1605 until his death on 17 May 1606 under the name of Dmitriy Ivanovich (Russian: Дмитрий Иванович). Dmitry ascended to the throne after the deposition of Tsar Feodor II and ruled for 11 months before he was assassinated in the 1606 Moscow Uprising and replaced with Tsar Vasili IV. Dmitry was a pretender who impersonated Dmitry of Uglich, a son of Ivan the Terrible, and his reign formed part of the Time of Troubles. He was the first, and most successful, of at least three imposters who claimed during the Time of Troubles to be the youngest son of Ivan the Terrible, tsarevich Dmitry Ivanovich, who supposedly escaped a 1591 assassination attempt when he was eight years old. It is generally believed that the real Dmitry of Uglich died in Uglich in 1591. False Dmitry claimed that his mother, Maria Nagaya, anticipated the assassination attempt ordered by Boris Godunov and helped him escape to a monastery in the Tsardom of Russia, and the assassins killed somebody else instead.
Text from the Wikipedia article False_Dmitry_I, licensed CC BY-SA 4.0.