Question: Which seminal figure of the Romantic Age inspired the name for Robert Bolt's play? 
Context: Armin von Gerkan (November 30, 1885 in Subate, Latvia – December 22, 1969 in Garstedt, present Norderstedt, Germany) was a Baltic German classical archaeologist and member of an aristocratic family.  He was an expert for archaeological building research and joint founder of Robert Johann Koldewey Society (Koldewey-Gesellschaft e.V.) in Berlin.  Gerkan is a seminal figure in ancient architectural history.  His report "Griechische Stadtanlagen" (1924) is still consulted today as a basic text for ancient city planning and his methodology has been widely adopted. A Man for All Seasons is a 1964 Australian TV play.  It is an adaptation of the play by Robert Bolt. Dmitry Sergeyevich Merezhkovsky (Russian: Дми́трий Серге́евич Мережко́вский ; ] ; 14 August [O.S. 2 August] 1866 – December 9, 1941) was a Russian novelist, poet, religious thinker, and literary critic.  A seminal figure of the Silver Age of Russian Poetry, regarded as a co-founder of the Symbolist movement, Merezhkovsky – with his poet wife Zinaida Gippius – was twice forced into political exile.  During his second exile (1918–1941) he continued publishing successful novels and gained recognition as a critic of the Soviet Union.  Known both as a self-styled religious prophet with his own slant on apocalyptic Christianity, and as the author of philosophical historical novels which combined fervent idealism with literary innovation, Merezhkovsky was nine times a nominee for the Nobel Prize in literature, which he came closest to winning in 1933. Ranjit Bolt OBE (born 1959) is a British playwright and translator.  He was born in Manchester of Anglo-Indian parents and is the nephew of playwright and screenwriter Robert Bolt.  His father is literary critic Sydney Bolt, author of several books including "A preface to James Joyce", and his mother has worked as a teacher of English. A Man for All Seasons is a 1966 British biographical drama film in Technicolor based on Robert Bolt's play of the same name and adapted for the big screen by Bolt himself.  It was released on 12 December 1966.  It was directed by Fred Zinnemann, who had previously directed the films "High Noon" and "From Here to Eternity". The Tiger and the Horse is a three-act play by Robert Bolt, written in 1960.  It takes its title from William Blake's "The Marriage of Heaven and Hell": "The tigers of wrath are wiser than the horses of instruction." A Man For All Seasons is a play by Robert Bolt based on the life of Sir Thomas More.  An early form of the play had been written for BBC Radio in 1954, and a one-hour live television version starring Bernard Hepton was produced in 1957 by the BBC, but after Bolt's success with "The Flowering Cherry", he reworked it for the stage. Robert Castle Schoen (born February 1, 1934), known professionally as Bob Shane, is an American singer and guitarist and, with Nick Reynolds' death in October 2008, the only surviving founding member of The Kingston Trio.  In that capacity, Shane became a seminal figure in the revival of folk and other acoustic music as a popular art form in the U.S. in the late 1950s through the mid-1960s. William Blake (28 November 1757 – 12 August 1827) was an English poet, painter, and printmaker.  Largely unrecognised during his lifetime, Blake is now considered a seminal figure in the history of the poetry and visual arts of the Romantic Age.  What he called his prophetic works were said by 20th century critic Northrop Frye to form "what is in proportion to its merits the least read body of poetry in the English language".  His visual artistry led 21st-century critic Jonathan Jones to proclaim him "far and away the greatest artist Britain has ever produced".  In 2002, Blake was placed at number 38 in the BBC's poll of the 100 Greatest Britons.  Although he lived in London his entire life (except for three years spent in Felpham), he produced a diverse and symbolically rich "œuvre", which embraced the imagination as "the body of God" or "human existence itself". Luang Por Sumedho or Ajahn Sumedho (Thai: อาจารย์สุเมโธ ) (born Robert Karr Jackman, July 27, 1934, Seattle) is the senior Western representative of the Thai forest tradition of Theravada Buddhism.  He was abbot of Amaravati Buddhist Monastery, UK, from its consecration in 1984 until his retirement in 2010. " Luang Por" means "Venerable Father" (หลวงพ่อ), an honorific and term of affection in keeping with Thai custom; "ajahn" means "teacher".  A bhikkhu since 1967, Sumedho is considered a seminal figure in the transmission of the Buddha's teachings to the West.
Answer: William Blake