He returned to politics to oppose the pro-slavery Kansas – Nebraska Act ( 1854 ); this law repealed the slavery-restricting Missouri Compromise ( 1820 ).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 – George Grove, English historian ( d. 1900 )

* 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.

File: The Judgement of Paris by Jean Baptiste Regnault. jpg | Jean-Baptiste Regnault, c. 1820

Kate Larson records the year 1822, based on a midwife payment and several other historical documents, including her runaway advertisement while Jean Humez says " the best current evidence suggests that Tubman was born in 1820, but it might have been a year or two later.

Between 1810 and 1820, several French Canadian fur traders, including Lamar Andie, Jean Baptiste Recollect, and Pierre Constant had established fur trading posts around Muskegon Lake.

The White-winged Chough was first described by French naturalist Louis Jean Pierre Vieillot in 1817 as Coracia melanorhamphos, other names given include Pyrrhocorax leucopterus by Dutch zoologist Coenraad Jacob Temminck in 1820, and Corcorax australis by French naturalist René-Primevère Lesson in 1830. before the current name was settled by Gregory Mathews in 1912.

Veteran opera-goers regarded Tamagno as being the legitimate successor to Enrico Tamberlik ( 1820 – 1889 ), the dominant Italian heroic tenor of the mid-19th century, while Jean de Reszke ( 1850 – 1925 ) was widely considered to be the finest of his tenorial coevals.

The area was re-claimed by Jean Pierre Boyer, then the appointed president of Haiti, on October 26, 1820 after Haitian forces captured Cap-Haïtien, re-uniting Haiti.

Jean Ingelow ( 17 March 1820 – 20 July 1897 ), was an English poet and novelist.

French naturalists Jean René Constant Quoy and Joseph Paul Gaimard originally described the blacktip reef shark during the 1817 – 1820 exploratory voyage of the corvette Uranie.

While these writers were all more or less academic, and appealed to the cultured few, four poets of the people addressed a far wider public: Verdi ( 1779 – 1820 ), of Bordeaux, who wrote comic and satirical pieces ; Jean Reboul ( 1796 – 1864 ), the baker of Nîmes, who never surpassed his first effort, L ' Ange à l ' enfant ( 1828 ); Victor Gelu ( 1806-188 ~), relentless and brutal, but undeniably powerful of his kind ( Fenian ci Grouman ; dix chansons provençales, 1840 ); and, greatest of them all, the true and acknowledged forerunner of the felibres, Jacques Jasmin, whose poems, both lyrical and narrative, continue to find favour with men of the highest culture and literary attainments, as with the villagers for whom they were primarily intended.

* Spix & Wagler 1824: Serpentum Brasiliensium Species novae ou Histoire Naturelle des especes nouvelles de Serpens, Recueillies et observées pendent le voyage dans l ' interieur du Brésil dans les Années 1817, 1818, 1819, 1820 ... publiée par Jean de Spix, ... écrite dàprès les notes du Voyageur par Jean Wagler-Typis Franc.

Antoine Jean Baptiste Robert Auget, Baron de Montyon ( 23 December 1733 – 29 December 1820 ) was a French philanthropist, born in Paris.

French naturalists Jean René Constant Quoy and Joseph Paul Gaimard originally described the cookiecutter shark during the 1817 – 1820 exploratory voyage of the corvette Uranie, giving it the name Scymnus brasiliensis because the type specimen was caught off Brazil.

Dupont's Lark was originally described by Louis Jean Pierre Vieillot in 1820.

In 1817 the French pirate Jean Lafitte settled on Galveston Island ; his colony there grew to more than 1, 000 persons by 1818 but was abandoned in 1820.

Other important names in its historical development were Jean Zuléma Amussat ( 1796 – 1856 ), Auguste Nélaton ( 1807 – 1873 ), Henry Thompson ( 1820 – 1904 ) and William Cheselden ( 1688 – 1752 ).

* Jean d ' Hertault, comte de Beaufort ( under the pseudonym Jean de Beaufort ), Élisa Bonaparte, princesse de Lucques et Piombino, grande-duchesse de Toscane ( 1777 – 1820 ), 1904 ( brochure de 16 pages )

Her husband, the 4th Duke, married secondly, at the Kirk of Fochabers, ( probably Bellie ), in July 1820, Jane Jean Christie, who was a native of Fochabers and was then aged about 40.

Jean Simeon Rousseau de la Rottiere ( 1747 – 1820 ), the youngest son of Jules Antoine Rousseau ( sculpteur du Roi ), was a French decorative painter.

* Jean Guénisset ( 1820 )

Australian English started diverging from British English after the founding of the colony of New South Wales in 1788 and was recognised as being different from British English by 1820.

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.

* 1820 – John Tenniel, English illustrator ( d. 1914 )

The sons of Montgolfier obtained an English patent for an improved version in 1816, and this was acquired, together with Whitehurst's design, in 1820 by Josiah Easton, a Somerset-born engineer who had just moved to London.

Posthumous Portrait of Percy Shelley | Shelley Writing Prometheus Unbound ( Shelley ) | Prometheus Unbound ( 1845 ) On 17 September 1820, Severn set sail onboard the Maria Crowther from England to Italy with the famous English poet John Keats.

The islands were named after the first in the Russian ( Krusenstern ) and French ( Duperrey ) maps ( 1820 ), later in the English maps.

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.

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

The term is also used specifically to denote re-creation of the dances of the English Regency ( 1795 – 1820 ), American Civil War ( 1860s ), Victorian, and Ragtime eras.

* December 8 – Herbert Spencer, English philosopher ( b. 1820 )

* August 13 – Florence Nightingale, English nurse ( b. 1820 )

* March 1 – Isaac Todhunter, English mathematician ( b. 1820 )

* April 25 – Anna Sewell, English author ( b. 1820 )

* August 30 – James Geiss, English businessman ( b. 1820 )

* May 28 – Anne Brontë, English author ( b. 1820 )

Sir Joseph Banks, 1st Baronet, GCB, PRS ( 19 June 1820 ) was an English naturalist, botanist and patron of the natural sciences.

The forces that impelled Dickens to create a powerful, impressive, and enduring tale were the profoundly humiliating experiences of his childhood, the plight of the poor and their children during the boom decades of the 1830s and 1840s, Washington Irving's essays on Christmas published in his Sketch Book ( 1820 ) describing the traditional old English Christmas, fairy tales and nursery stories, as well as satirical essays and religious tracts.

This in turn was adapted by the English melodramatist James Planché as The Vampire ; or, the Bride of the Isles ( 1820 ) at the Lyceum ( then called the English Opera House ), also set in Scotland.

In 1820, a U. S. Congressman, whose district included Buncombe County, unintentionally contributed a word to the English language.

Florence Nightingale OM, RRC (; 12 May 1820 – 13 August 1910 ) was a celebrated English nurse, writer and statistician.