He returned to politics to oppose the pro-slavery Kansas – Nebraska Act ( 1854 ); this law repealed the slavery-restricting Missouri Compromise ( 1820 ).

Percy Bysshe Shelley composed a " Hymn of Apollo " ( 1820 ), and the god's instruction of the Muses formed the subject of Igor Stravinsky's Apollon musagète ( 1927 – 1928 ).

Causes include controversy over admitting Missouri as a slave state in 1820, the acquisition of Texas as a slave state in 1845 and the status of slavery in western territories won as a result of the Mexican – American War and the resulting Compromise of 1850.

* 1820 – Nadar, French photographer, caricaturist, journalist, novelist and balloonist ( d. 1910 )

* 1820 – Alexander Ypsilantis is declared leader of Filiki Eteria, a secret organization to overthrow Ottoman rule over Greece.

* 1820 – John Tyndall, British physicist ( d. 1893 )

* 1890 – David Wilber, American politician ( b. 1820 )

* 1751 – Wilhelmina of Prussia, Princess of Orange ( d. 1820 )

* 1820 – Andrew Rainsford Wetmore, Canadian politician ( d. 1892 )

* 1820 – Constitutionalist insurrection at Oporto, Portugal.

* Alfonso Sanz y Martínez de Arizala ( 28 January 1880, Madrid – 1970 ), married in 1922 to María de Guadalupe de Limantour y Mariscal ( d. 1977, Marbella ), daughter of Julio de Limantour y Marquet ( 17 June 1863, Mexico City – 11 October 1909, Mexico City ) and wife Elena Mariscal y ..., paternal granddaughter of French Joseph Yves de Limantour y Rence de la Pagame ( 1812, Ploemeur – 1885, Mexico City ) and wife Adèle Marquet y Cabannes ( 1820, Bordeaux –?

* 1771 – Karl Philipp Fürst zu Schwarzenberg, Austrian field marshal ( d. 1820 )

* 1820 – Alexander Cartwright, American inventor of Baseball ( d. 1892 )

Anne Brontë (; 17 January 1820 – 28 May 1849 ) was a British novelist and poet, the youngest member of the Brontë literary family.

Four more children followed: Charlotte, ( 1816 – 1855 ), Patrick Branwell ( 1817 – 1848 ), Emily, ( 1818 – 1848 ) and Anne ( 1820 – 1849 ).

* 1899 – Joseph Wolf, German artist ( b. 1820 )

* Daniel Boone ( November 2, 1734 October 22 – September 26, 1820 ) was an American pioneer, explorer, and frontiersman whose frontier exploits made him one of the first folk heroes of the United States.

* 1820 – The Venus de Milo is discovered on the Aegean island of Melos.

Founded in 1764 prior to American independence from the British Empire as the College in the English Colony of Rhode Island and Providence Plantations early in the reign of King George III ( 1760 – 1820 ), Brown is the third oldest institution of higher education in New England and seventh oldest in the United States.

On 29 March 1820, George ( now considerably wealthier ) was finally allowed to marry Betty Hindmarsh at Newburn.

George III, elector ( ruler ) from 1760 to 1820, never once visited Hanover.

Other notable pre-20th century examples include Giacomo Casanova's 1788 Icosaméron, a 5-volume, 1, 800-page story of a brother and sister who fall into the Earth and discover the subterranean utopia of the Mégamicres, a race of multicolored, hermaphroditic dwarfs ; Symzonia: A Voyage of Discovery by a " Captain Adam Seaborn " ( 1820 ) which reflected the ideas of John Cleves Symmes, Jr .; Edgar Allan Poe's 1838 novel The Narrative of Arthur Gordon Pym of Nantucket ; Jules Verne's 1864 novel A Journey to the Center of the Earth, which described a prehistoric subterranean world ; and George Sand's 1884 novel Laura, Voyage dans le Cristal where unseen and giant crystals could be found in the interior of the Earth.

George Hearst ( 1820 – 1891 ), American publisher and U. S. senator, entered the newspaper business in 1880, acquiring the San Francisco Daily Examiner.

* 1820 – King George III of the United Kingdom ( b. 1738 )

* 1821 – Princess Elizabeth of Clarence, daughter of King William IV, granddaughter of King George III ( b. 1820 )

* 1897 – George Hendric Houghton, American clergyman ( b. 1820 )

The island was named for Prince Edward, Duke of Kent and Strathearn ( 1767 – 1820 ), the fourth son of King George III and the father of Queen Victoria.

The colony's new name honoured the fourth son of King George III, Prince Edward Augustus, the Duke of Kent ( 1767 – 1820 ), who subsequently led the British military forces on the continent as Commander-in-Chief, North America ( 1799 – 1800 ), with his headquarters in Halifax.

George II ( 1727 – 1760 ) occasionally presided at Cabinet meetings but his grandson, George III ( 1760 – 1820 ), is known to have attended only two during his 60 year reign.

As noted previously, George III ( 1760 – 1820 ) is known to have attended only two Cabinet meetings.

The Regent became George IV in 1820, but during his 10 year reign was indolent and frivolous.

Some feel that the popular use of the term " Regency dance " is not technically correct, as the actual English Regency ( the future George IV ruling on behalf of mad King George III ) lasted only from 1811 until 1820.

* 1820 – George Hearst, American businessman and politician ( d. 1891 )

George III reigned 1760 – 1820 ; he was born in Britain, never visited Hanover, and spoke English as his first language.

A weak ruler as regent ( 1811 – 20 ) and king ( 1820 – 30 ), George IV let his ministers take full charge of government affairs, playing a far lesser role than his father, George III.

* June 4 – King George III of the United Kingdom ( d. 1820 )

**** HM King George III ( 1738 – 1820 )

He is the first of only five monarchs to reign in the Kingdom of England or its successor states for 50 years or more, the others being Edward III ( 1327 – 1377 ), George III ( 1760 – 1820 ), Victoria ( 1837 – 1901 ) and Elizabeth II ( 1952 – present ).

George IV of the United Kingdom, who was Prince Regent while his father was mentally incapable between 1811 and 1820

He died on 19 June 1820 in Spring Grove House and was buried at St Leonard's Church, Heston.

Sir George Grove, CB ( 13 August 1820 – 28 May 1900 ) was an English writer on music, known as the founding editor of Grove's Dictionary of Music and Musicians.

The First Vision ( also called the grove experience ) refers to a vision that Joseph Smith, Jr. said he received in April 1820, in a wooded area in Manchester, New York, which his followers call the Sacred Grove.

He was born on 17 February 1820 at Baskerville House, Worcestershire, the eldest son of John Richards of Wassell Grove near Stourbridge, who was M. P.

Francis Walker was the son of John Walker of Arnos Grove a Fellow of the Royal Society, the Linnean Society and the Royal Horticultural Society. Born into a wealthy and highly educated family Francis spent the years 1816 ( when he was seven years old ) to 1820 ( when he was eleven ) in Switzerland at Geneva, Lucerne and Vevey where the family party was joined by Madame de Staël, the poet Lord Byron and some Swiss naturalists gathered around Nicolas Théodore de Saussure.