Question: Hamlet is a 1969 British film adaptation of a play by what English playwright who is often called England's national poet, and the Bard of Avon?

Context articles: National poet
Robert Burns
Hamlet (1969 film)
Ben Jonson
Shakespeare Jubilee
Thomas Jevon
Adam Mickiewicz
Hamlet (1948 film)
William Shakespeare
Royal Shakespeare Theatre

A national poet or national bard is a poet held by tradition and popular acclaim to represent the identity, beliefs and principles of a particular national culture.
 The national poet as culture hero is a long-standing symbol, to be distinguished from successive holders of a bureaucratically-appointed poet-laureate office.
 The idea and honoring of national poets emerged primarily during Romanticism, as a figure that helped consolidation of the nation states, as it provided validation of their ethno-linguistic groups.
Robert Burns (25 January 175921 July 1796), also known as Rabbie Burns, the Bard of Ayrshire, Ploughman Poet and various other names and epithets, was a Scottish poet and lyricist.
 He is widely regarded as the national poet of Scotland and is celebrated worldwide.
 He is the best known of the poets who have written in the Scots language, although much of his writing is also in English and a light Scots dialect, accessible to an audience beyond Scotland.
 He also wrote in standard English, and in these writings his political or civil commentary is often at its bluntest.
Hamlet is a 1969 British film adaptation of Shakespeare's play "Hamlet", starring Nicol Williamson as Prince Hamlet.
 It was directed by Tony Richardson and based on his own stage production at the Roundhouse theater in London.
 The film also stars Anthony Hopkins as King Claudius, Judy Parfitt as Queen Gertrude, Marianne Faithfull as Ophelia, Mark Dignam as Polonius, Gordon Jackson as Horatio, and Michael Pennington as Laertes.
Benjamin "Ben" Jonson (c. 11 June 1572 – 6 August 1637) was an English playwright, poet, actor, and literary critic, whose artistry exerted a lasting impact upon English poetry and stage comedy.
 He popularised the comedy of humours.
 He is best known for the satirical plays "Every Man in His Humour" (1598), "Volpone, or The Fox" (c. 1606), "The Alchemist" (1610) and "Bartholomew Fair" (1614) and for his lyric poetry; he is generally regarded as the second most important English playwright during the reign of James I after William Shakespeare.
The Shakespeare Jubilee was staged in Stratford-upon-Avon between 6–8 September 1769.
 The jubilee was organised by the actor and theatre manager David Garrick to celebrate the Jubilee of the birth of William Shakespeare, although it was in 1616 when he died.
 It had a major impact on the rising tide of bardolatry that led to Shakespeare becoming established as the English national poet.
 Thomas Arne composed the song "Soft Flowing Avon" for the Jubilee.
Thomas Jevon (1652–1688) was an English playwright, and one of the first English Harlequins.
 He began his career as a dancing master, but worked his way onto the stage, and played leading low-comedy parts in London between 1673 and 1688.
 His brother-in-law was the English playwright and poet laureate Thomas Shadwell.
Adam Bernard Mickiewicz ( ; 24 December 179826 November 1855) was a Polish poet, dramatist, essayist, publicist, translator, professor of Slavic literature, and political activist.
 He is regarded as national poet in Poland, Lithuania and Belarus.
 A principal figure in Polish Romanticism, he is counted as one of Poland's "Three Bards" (""Trzej Wieszcze"") and is widely regarded as Poland's greatest poet.
 He is also considered one of the greatest Slavic and European poets and has been dubbed a "Slavic bard".
 A leading Romantic dramatist, he has been compared in Poland and Europe to Byron and Goethe.
Hamlet is a 1948 British film adaptation of William Shakespeare's play "Hamlet", adapted and directed by and starring Sir Laurence Olivier.
 "Hamlet" was Olivier's second film as director, and also the second of the three Shakespeare films that he directed (the 1936 "As You Like It" had starred Olivier, but had been directed by Paul Czinner).
 "Hamlet" was the first British film to win the Academy Award for Best Picture.
 It is also the first sound film of the play in English.
 A 1935 sound film adaptation, "Khoon Ka Khoon", had been made in India and filmed in the Urdu language.
William Shakespeare ( ; 26 April 1564 (baptised) – 23 April 1616) was an English poet, playwright, and actor, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist.
 He is often called England's national poet, and the "Bard of Avon".
 His extant works, including collaborations, consist of approximately 38 plays, 154 sonnets, two long narrative poems, and a few other verses, some of uncertain authorship.
 His plays have been translated into every major living language and are performed more often than those of any other playwright.
The Royal Shakespeare Theatre (RST) is a 1,040+ seat thrust stage theatre owned by the Royal Shakespeare Company dedicated to the English playwright and poet William Shakespeare.
 It is located in the town of Stratford-upon-Avon – Shakespeare's birthplace – in the English Midlands, beside the River Avon.
 The Royal Shakespeare and Swan Theatres re-opened in November 2010 after undergoing a major renovation known as the Transformation Project.