People starting with John Oxley in 1817, 1818 and 1821, followed by Charles Sturt in 1829 – 1830 attempted to follow the westward-flowing rivers to find an " inland sea ", but these were found to all flow into the Murray River and Darling River which turn south.

* 1821 – John Chivington, American officer ( d. 1892 )

Severn is best known for his many portraits of Keats, the most famous being the miniature portrait in the National Gallery ( 1819 ), the pen-and-ink sketch, Keats on his Deathbed ( 1821 ), and the oil painting of the poet reading, John Keats at Wentworth Place ( 1821 – 23 ).

* 1821 – John C. Breckinridge, American lawyer and politician, 14th Vice President of the United States and Confederate general ( d. 1875 )

When it finished in 1798, John Gifford began The Anti-Jacobin Review and Magazine, or, Monthly Political and Literary Censor, which ran until 1821.

John Keats (; 31 October 1795 – 23 February 1821 ) was an English Romantic poet.

* John George Walker ( 1821 – 1893 ), general in the Confederate States Army during the American Civil War

In 1821 John Quincy Adams stated, " Weights and measures may be ranked among the necessities of life to every individual of human society.

* 1795 – John Keats, British poet ( d. 1821 )

* 1754 – John Ross Key, American army officer, lawyer, and judge ( d. 1821 )

* October 30 – Sir John Joseph Caldwell Abbott, Canadian politician ( b. 1821 )

** John M. B. Clitz, American admiral ( b. 1821

* May 17 – John C. Breckinridge, Vice President of the United States ( b. 1821 )

* October 31 – John Keats, English poet ( d. 1821 )

* August 29 – John Hunter, second governor of New South Wales ( d. 1821 )

The coupler is named for John Oldham who invented it in Ireland, in 1821, to solve a paddle placement problem in a paddle steamer design.

John Abbott ( 1821 – 1893 ) was Prime Minister of Canada, 1891 – 1892.

Clay and his wife had eleven children ( six daughters and five sons ): Henrietta ( 1800 – 1801 ), Theodore ( 1802 – 1870 ), Thomas ( 1803 – 1871 ), Susan ( 1805 – 1825 ), Anne ( 1807 – 1835 ), Lucretia ( 1809 – 1823 ), Henry, Jr .( 1811 – 1847 ), Eliza ( 1813 – 1825 ), Laura ( 1815 – 1817 ), James Brown ( 1817 – 1864 ), and John ( 1821 – 1887 ).

Only slightly more than a year later, the first landing on the Antarctic mainland was arguably by the American Captain John Davis, a sealer, who claimed to have set foot there on 7 February 1821, though this is not accepted by all historians.

However he was a charter member of All Souls Unitarian Church in Washington D. C. in 1821 signing his name right next to John Quincy Adams and remained a member for all his life.

John Quincy Adams concluded in 1821 that: " Calhoun is a man of fair and candid mind, of honorable principles, of clear and quick understanding, of cool self-possession, of enlarged philosophical views, and of ardent patriotism.

Aitutaki was the first of the Cook Islands to accept Christianity, after London Missionary Society ( LMS ) missionary John Williams visited in 1821.

Trade card designed by John Bacon, about 1821 V & A Museum no.

* Bill Scott – Jack Spigot ( 1821 ), Memnon ( 1825 ), The Colonel ( 1828 ), Rowton ( 1829 ), Don John ( 1838 ), Charles the Twelfth ( 1839 ), Launcelot ( 1840 ), Satirist ( 1841 ), Sir Tatton Sykes ( 1846 )

A portrait of Mozart, aged 14, in Verona, 1770, by Saverio dalla Rosa ( 1745 – 1821 )

Instead he was probably the son of a James Christie who in 1821 described himself as a tailor, late of Leicester Square but then of Newman Street, and who died in 1825 aged eighty-six.

In 1821, aged 21, Montrose was appointed Vice-Chamberlain of the Household, despite not having a seat in parliament, and was sworn of the Privy Council the same year.

Wilbraham died, childless, in 1821, aged 82.

Her first role was at the age of 15 as Aricia in Schiller's translation of Racine's Phèdre, and in 1821, aged 17, she was received with so much enthusiasm as Pamina in Mozart's The Magic Flute that her future career in opera was assured.

Keats probably gave the book to Joseph Severn in January 1821 before his death in February, aged 25.

Although his last recorded first class match was in 1821 ( aged 55 ), there is strong anecdotal evidence that he continued to play to a very advanced age, for in his Oxford Memories, Pycroft stated " Beldham's was a green old age.

The town's name was changed to Columbus on March 20, 1821.

Also in 1821, Anning found the 20 ft ( 6 m ) skeleton from which the species Ichthyosaurus platydon ( now Temnodontosaurus platyodon ) would be named.

The site of the county seat was chosen on February 15, 1821 by a team of commissioners, who suggested the name Tiptona, in honor of John Tipton ; on March 20, the name Columbus was adopted.

The naval Battle of Navarino was fought on 20 October 1827, during the Greek War of Independence ( 1821 – 32 ), in Navarino Bay ( modern-day Pylos ), on the west coast of the Peloponnese peninsula, in the Ionian Sea.

The example of Great Britain was then followed by the following countries in abolishing slavery within their dominions: in 1848 the slaves in all France's colonies were immediately emancipated ; in 1853 the Dutch commenced emancipation of slaves within their possessions ; in 1858 it was enacted that every slave belonging to a Portuguese subject should be freed within 20 years and, from 29 April 1878, slavery became illegal throughout Portuguese possessions ; the government of Buenos Aires enacted that all children of slaves after the 31 January 1813 should be free ; in Columbia those born after 16 July 1821 were to be liberated upon attaining 18 and Mexico ended slavery on 15 September 1829.

In 1821, St. Matthew's Church was demolished with exception of the tower and chancel and replaced at a cost of £ 20, 000 to a design by Francis Goodwin.

James Hammond Trumbull ( December 20, 1821 – August 5, 1897 ) was an American scholar and philologist.

Franz Karl Achard ( April 28, 1753, Berlin – April 20, 1821, Kunern, Wohlau-Cunern, Silesia ) was a German ( Prussian ) chemist, physicist and biologist.

He married his second wife Caroline Gifford on 29 October 1821 and she had a daughter and four sons: Barbara Augusta ( b. 9 August 1822 ), John Fox Fitz-Giffard ( b. 20 November 1823 ), Charles Orville January ( b. 1825 ), Euphrates Henry April ( b. 1826 ) and William Harper ( b. April 1827 ).

A map produced in 1920 illustrating the route of " El Camino Real " in 1821, along with the 20 Spanish missions in California | Alta California Franciscan missions.

* November 20 – John Wall Callcott, composer ( died 1821 )

Gustav Heinrich Gans Edler Herr von und zu Putlitz ( March 20, 1821 – September 5, 1890 ) was a German author.

Cornelis Willem Opzoomer ( 20 September 1821, Rotterdam – 23 August 1892, Oosterbeek ) was a Dutch jurist, positivist philosopher and theologian.

Juan José Ruiz de Apodaca y Eliza Gastón de Iriarte López de Letona y Lasqueti () ( February 3, 1754, Cadiz, Spain — January 11, 1835, Madrid, Spain ) was a Spanish Basque naval officer and viceroy of New Spain from September 20, 1816 to July 5, 1821, during Mexico's War of Independence.

Franz Friedrich Ernst Brünnow ( November 18, 1821 – August 20, 1891 ) was a German astronomer.

Thomas Bibb ( May 8, 1783 – September 20, 1839 ) was the second Governor of the U. S. state of Alabama from 1820 to 1821.

Out of this tangle it appears the famous purchase was not made on the usually accepted date of 20 June 1826 but rather nearly five years earlier on 25 Sept. 1821, although the legal technicalities were not resolved until 1830.

William Wellesley-Pole, 3rd Earl of Mornington GCH, PC, PC ( Ire ) ( 20 May 1763 – 22 February 1845 ), known as The Lord Maryborough between 1821 and 1842, was a British politician and an elder brother of the Duke of Wellington.

Edward Zane Carroll Judson ( March 20, 1821 / 1823 – July 16, 1886 ), known as E. Z. C. Judson and by his pseudonym Ned Buntline, was an American publisher, journalist, writer and publicist.

General Sir Frederick Francis Maude VC GCB ( 20 December 1821 – 20 June 1897 ) was a recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces.

Josiah Crudup ( 13 January 1791 – 20 May 1872 ) was a U. S. Congressman from North Carolina between 1821 and 1823.

Missolonghi revolted on May 20, 1821 and was a major stronghold of the Greek rebels in the Greek War of Independence, being the seat of the Senate of Western Continental Greece.

* Jules Anglès: September 29, 1815 – December 20, 1821