Question: The character Igor Dmitriev played in "Hamlet" was summoned by what king to distract the prince from his apparent madness?

Context articles: Igor Dmitriev
Igor (film)
The Green Carriage
Crown Prince of Thailand
The Madness of King Scar
Lord Colvill
Literary influence of Hamlet
Igor Dmitriev (ice hockey)
Rosencrantz and Guildenstern
Hamlet (Liszt)

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").
Igor is a 2008 French-American computer-animated science fantasy film about the stock character Igor, dreaming to win first place at the Evil Science Fair.
 It was produced by Exodus Film Group and animated by Sparx Animation Studios.
 Metro-Goldwyn-Mayer released it on September 19, 2008, and it grossed $30.7 million on a $25 million budget.
 It is MGM's first fully computer-animated film.
 It was directed by Tony Leondis and written by Chris McKenna, John Hoffman and Dimitri Toscas.
 The film features the voices of John Cusack, Molly Shannon, Steve Buscemi, Sean Hayes, Jennifer Coolidge, Arsenio Hall, Eddie Izzard, Jay Leno, Christian Slater and John Cleese.
The Green Carriage (Russian: Зелёная карета , "Zelyonaya kareta " ) is a 1967 Soviet historical drama film directed by Yan Frid and starring Natalya Tenyakova, Vladimir Chestnokov and Igor Dmitriev.
 It portrays the life of the nineteenth century stage actress Varvara Asenkova.
The Crown Prince of Thailand (or Siam; Thai: สยามมกุฎราชกุมาร ; rtgs: Sayammakutratchakuman ) is a title held by the heir apparent to the Thai throne.
 First created by King Chulalongkorn (Rama V) in 1886, for his son Prince Maha Vajirunhis, the king's eldest son by a royal wife Queen Savang Vadhana.
 Prior to this, the Siamese throne did not have a law or formal system regulating the royal succession.
 In 1688 King Petracha of Ayutthaya created the title of Front Palace, which by the Rattanakosin period had become the main title granted to the heir presumptive to the throne.
 However few Front Palaces have succeeded to the throne this way, with the exception of King Buddha Loetla Nabhalai (Rama II) in 1809.
 After the Front Palace crisis in 1875, the title of Front Palace was abolished and replaced with the title of Crown Prince, who became heir apparent to the throne.
"The Madness of King Scar" is a song written by composer Elton John and lyricist Tim Rice, which premiered in the musical "The Lion King", a stage adaptation of Disney's 1994 animated film of the same name.
 Originally recorded and storyboarded for the movie, it was removed from the final version.
 Media outlets believed the decision to exclude the song was based on its explicit references to sexuality.
 "The Madness of King Scar" had been added to the musical along with two other songs.
 It is one of two tracks that more prominently features vocals from the character Nala.
 The title is a reference to the 1994 film "The Madness of King George".
Lord Colvill was a title of nobility in the Peerage of England.
 The family rose through the Anglo-Norman aristocracy, holding lands in Lincolnshire, Yorkshire and Cambridgeshire, perhaps most notable being Weston in Cambridgeshire, subsequently called Weston-Colville.
 Walter de Colville of Castle Bytham in Lincolnshire was summoned in 1264 to a Parliament convened on behalf of Henry III of England by Simon de Montfort, who held the king captive.
 By later usage, this act is held to have ennobled the family as parliamentary barons, creating the title.
 Walter was captured by Prince Edward later that year and was forced to redeem his confiscated lands.
 The next two generations of the family were excluded from parliamentary summons and they were not again called until 1341/2, although the recipient, Robert de Colville, a great-grandson of Walter, had been attending Parliament as an unsummoned lord as early as 1331.
 The title fell into abeyance on the death of his son Robert at the age of 6 in 1370, his heirs being the descendants of two sisters of his great-grandfather, granddaughters of the Walter first summoned.
William Shakespeare's Hamlet is a tragedy, believed to have been written between 1599 and 1601.
 It tells the story of Hamlet, Prince of Denmark—who takes revenge on the current king (Hamlet's uncle) for killing the previous king (Hamlet's father) and for marrying his father's widow (Hamlet's mother)—and it charts the course of his real or feigned madness.
 "Hamlet" is the longest play—and Hamlet is the largest part—in the entire Shakespeare canon.
 Critics say that "Hamlet" "offers the greatest exhibition of Shakespeare's powers".
Igor Dmitriev (19 October 1941 – 21 December, 1997) was a Russian ice hockey player and coach.
 He was inducted into the Russian and Soviet Hockey Hall of Fame in 1974 as a player, and in 1988 as a builder.
 He was posthumously inducted into the IIHF Hall of Fame as a builder in 2007.
Rosencrantz and Guildenstern are characters in William Shakespeare's tragedy "Hamlet".
 They are childhood friends of Hamlet, summoned by King Claudius to distract the prince from his apparent madness and if possible to ascertain the cause of it.
 The characters were revived in W. S. Gilbert's satire, "Rosencrantz and Guildenstern", and as the alienated heroes of Tom Stoppard's absurdist play, "Rosencrantz and Guildenstern Are Dead", which was adapted into a film.
Hamlet, S.104, is a symphonic poem by Franz Liszt, written in 1858 and published as No. 10.
 It was not performed until 2 July 1876.
 Like all but one of Liszt's 13 symphonic poems, "Hamlet" was written while Liszt was working in Weimar and is dedicated to Carolyne zu Sayn-Wittgenstein.
 After viewing Bogumil Dawison play Hamlet in Weimar (1856), Liszt wrote: "He does not make him into an indecisive dreamer who collapses under the power of his mission, as he is regarded since Goethe's theory in "Wilhelm Meister", but much more as a gifted, enterprising prince with important political views who is waiting for the right moment to complete his work of revenge and come to the aim of his ambition, that is, to be crowned king in place of his uncle.
 This goal can naturally not be reached in twenty-four hours and the clever anticipation which Shakespeare has put into the role of Hamlet and the negotiations with England which come clearly to the light of day at the end of the drama according to my view justify Dawson's interpretation, which Herr von Goethe and the aesthetes should not take too badly.
 Regarding Ophelia, Liszt wrote: "She is loved by Hamlet, but Hamlet, like every exceptional person, imperiously demands the wine of life and will not content himself with the buttermilk.
 He wishes to be understood by her without the obligation of explaining himself to her.
 She collapses under her mission, because she is incapable of loving him in the way that he must be loved, and her madness is only the decrescendo of her feeling, whose lack of sureness has not allowed her to remain on the level of Hamlet."
 Liszt's "Hamlet" is meant as a psychological study of the title character; only two brief references are made to Ophelia, both marked as "to be played as quietly as possible and sound like a shadowy picture."