The character Igor Dmitriev played in "Hamlet" was summoned by what king to distract the prince from his apparent madness?
Igor Dmitriev Igor Borisovich Dmitriev (Russian: И́горь Бори́сович Дми́триев ) (May 29, 1927 – January 26, 2008) was a Russian film and theater actor who specialized in playing aristocratic characters in costume productions (e.g., Rosencrantz in Grigori Kozintsev's "Hamlet").
Tsarevich Dmitry Ivanovich of Russia (1552–1553) Dmitri Ivanovich (Russian: Дмитрий Иванович ; 11 October 155226 June 1553) was the first Tsarevich or Tsesarevich - the heir apparent - of the Tsardom of Russia, as the eldest son of Ivan the Terrible, or "Ivan IV of Russia" and his first Tsaritsa, Anastasia Romanovna. He was the third child and first son of the couple and died in infancy.