In 1582, Tsar John IV (the Terrible) had a son, the future holy noble Tsarevich Dimitry of Uglich (Moscow). In the reign of Theodore Ioannovich, when his brother-in-law, the boyar Boris Godunov, was actually the ruler of the Russian state, Tsarevich Dimitri, together with his mother, Tsarina Maria Feodorovna, was removed from the Court to the city of Uglich.
Wanting to get rid of the legitimate heir to the Russian throne, Boris Godunov began to act against the prince as against a personal enemy. At first, he tried to slander the young heir to the throne, spreading false rumors about his imaginary illegitimate birth. Then he spread a new fiction that Demetrius had inherited the severity of his father's Sovereign. Since these actions did not bring the desired, the insidious Boris decided to destroy the prince. An attempt to poison Demetrius was unsuccessful: the deadly potion did not harm the lad. Then the villains decided on a clear crime.
On Saturday, May 28, 1591, when the lad was walking with the nurse in the yard, the assassins sent brutally slaughtered the prince.