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

* 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 )

The Adams-Onís Treaty, also known as the Transcontinental Treaty, was signed on February 22, 1819 by John Quincy Adams and Luis de Onís, but did not take effect until it was ratified by the Spanish government in 1821.

John Quincy Adams in 1821: " America does not go abroad in search of monsters to destroy " ( 200-01 ).

On Independence Day 1821, in response to those who advocated American support for independence movements in many South American countries, Adams gave a speech in which he said that American policy was moral support for independence movements but not armed intervention.

The Adams – Onís Treaty with Spain ( 1819 ) resolved the issue upon ratification in 1821.

The Adams – Onís Treaty, signed in 1819 and ratified by Spain in 1821, ceded Florida to the United States, and established a boundary between New Spain and the United States.

A statue in honour of Sir Charles Napier by George Gamon Adams ( 1821 – 1898 ) is on the southwest plinth, of the four plinths in Trafalgar Square, London.

Louisa Adams c. 1821 – 25, by Charles Bird King

Reminiscences of Mrs. Ann Adams, 1821 – 1829.

* George Gammon Adams ( 1821 – 1898 ), English portrait sculptor and medallist

The northern boundary of the 42nd parallel north was set by the Adams – Onís Treaty signed by the U. S. and Spain in 1821 and ratified by Mexico in 1831.

* George Washington Adams Class of 1821

In 1821, Williams was one of just four senators to vote against the Adams – Onís Treaty, in which Spain ceded Florida to the United States.

William Adams Richardson ( November 2, 1821 – October 19, 1896 ) was an American judge and politician.

Charles Henry Adams succeeded his father in 1821 but failed to maintain the standards of the school.

Under Wadsworth, John Adams conducted cruises in the West Indies in 1818 – 1819, and 1821 – 1822 for the suppression of piracy.

Adams graduated from Harvard University Class of 1821 and studied law.

Although the New England Journal of Medicine reported the invention of the stethoscope two years later, in 1821, as late as 1885 a professor of medicine stated, " He that hath ears to hear, let him use his ears and not a stethoscope.

In a letter he wrote in 1821, he stated " the legitimate meaning of the Instrument must be derived from the text itself ; or if a key is to be sought elsewhere, it must be not in the opinions or intentions of the Body which planned & proposed the Constitution, but in the sense attached to it by the people in their respective State Conventions where it recd.

In a new edition of 1821 he omitted the attack on Bishop Samuel Horsley, and stated that his political opinions had undergone no substantial change.

In a letter to Isabella Hoppner of 10 August 1821, Mary Shelley, however, stated emphatically that " Claire had no child ".

By 1821 the palace too had fallen into ruin and an Act of Parliament was passed which stated that it was unfit for habitation.

Santander also disagreed with Bolívar's attempt to promote a reform of the 1821 constitution before it was legally permitted ( the constitution stated that ten years had to go by ), and especially with Bolívar's attempted nationwide implementation of the constitution that he had previously drafted for Bolivia, which among other provisions called for a lifelong presidency with the ability to select a direct successor.

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.