* 1823 – Joseph Medill, American editor, publisher, and politician ( d. 1899 )

* 1823 – Alexander Ostrovsky, Russian playwright ( d. 1886 )

* 1823 – Goldwin Smith, English-Canadian historian and journalist ( d. 1910 )

* 1823 – Gotthold Eisenstein, German mathematician ( d. 1852 )

* 1740 – Pope Pius VII ( d. 1823 )

Alfred Russel Wallace, OM, FRS ( 8 January 1823 – 7 November 1913 ) was a British naturalist, explorer, geographer, anthropologist and biologist.

* 1759 – Jacques Widerkehr, Alsatian composer and cellist ( d. 1823 )

* 1772 – David Ricardo, English political economist ( d. 1823 )

* Mike Fink ( c. 1770 / 1780 – c. 1823 ) called " king of the keelboaters ", was a semi-legendary brawler and river boatman who exemplified the tough and hard-drinking men who ran keelboats up and down the Ohio and Mississippi Rivers.

* 1823 – Hugh Stowell Brown, English minister ( d. 1886 )

During 1823 – 1931 the grown settlement was known as Ust-Abakanskoye, 1914 – 1925: Abakan, 1925 – 1931: Khakassk.

* 1743 – Edmund Cartwright, English clergyman and inventor of the power loom ( d. 1823 )

* 1823 – Jacques Charles, French chemist ( b. 1746 )

* 1889 – Youssef Karam, Lebanese nationalist leader ( b. 1823 )

* Pope Pius VII ( 1742 – 1823, r. 1800 – 23 )

The construction commenced around the courtyard with the East Wing ( The King's Library ) in 1823 – 1828, followed by the North Wing in 1833 – 1838, which originally housed among other galleries a reading room, now the Wellcome Gallery.

#** Constance Marie Bonaparte ( 1823 – 1876 )

One Pipiolo leader from the south, Ramón Freire, rode in and out of the presidency several times ( 1823 – 1827, 1828, 1829, 1830 ) but could not sustain his authority.

* Terence MacManus ( c. 1823 – 1861 ), leader in Young Irelander Rebellion of 1848

In eight years of active service as an officer, he served two and a half years in a surveying ship in the Mediterranean ( 1818 – 21 ), one and a half years in a surveying sloop in the English Channel and off the coast of Ireland ( 1823 – 24 ), and one and a half years as Surveyor of the frigate during a voyage ( 1824 – 26 ) to and from the Hawaiian Islands ( then known as the " Sandwich islands ").

* 1917 – Sir Mackenzie Bowell, Canadian politician ( b. 1823 )

* March 4 – Sir Henry Raeburn, Scottish painter ( d. 1823 )

* June 5, 1823 – Raffles Institution, then the Singapore Institution, was founded by the founder of Singapore, Sir Stamford Raffles.

* Sir Thomas Maitland ( 1759 – 1824 ) 1815 – 1823

* Sir Frederick Adam ( 1781 – 1853 ) 1823 – 1832

** ( Carl ) Wilhelm Siemens ( known as ( Charles ) Wilhelm or Sir William Siemens ) ( 1823, Lenthe-1883 ), brother of Werner von Siemens

* Sir William Clayton ( architect ) ( 1823 – 1877 ), New Zealand architect

" Mrs Robert Scott Moncrieff " by Sir Henry Raeburn ( 1756 – 1823 )

Charles William Siemens ( originally Carl Wilhelm Siemens and later Sir William Siemens ) ( 4 April 1823 – 19 November 1883 ) was a German-born engineer who for most of his life worked in Britain and later became a British subject.

The City Fathers gave their approval in 1823 and fifteen Directors were elected, comprising the three founders and twelve other luminaries, including Sir Walter Scott, Sir John Hay and Robert Dundas.

Eldest son Charles Barry ( junior ) ( 1823 – 1900 ) designed Dulwich College and park in south London and rebuilt Burlington House ( home of the Royal Academy ) in central London's Piccadilly ; Edward Middleton Barry ( 1830 – 1880 ) completed the Parliament buildings and designed the Royal Opera House in Covent Garden ; Godfrey Walter Barry ( 1834 – 1868 ) became a surveyor ; Sir John Wolfe-Barry ( 1836 – 1918 ) was the engineer for Tower Bridge and Blackfriars Railway Bridge.

It was published anonymously in 1783, Lady Anne only acknowledging the authorship of the words two years before her death in a letter to Sir Walter Scott ( 1823 ), who subsequently edited it for the Bannatyne Club with two continuations.

The Raffles Institution was founded in 1823 by Sir Stamford Raffles.

* Sir William Siemens ( 1823 – 1883 ), industrialist

" He was buried wrapped in a military cloak in the ramparts of the town ; the funeral is celebrated in a well known poem by Charles Wolfe ( 1791 – 1823 ), " The Burial of Sir John Moore after Corunna ", which begins:

In 1823, Ainsworth and Crossley started to write many works together, including the first novel Sir John Chiverton.

Sir Henry Raeburn FRSE RSA ( 4 March 1756 – 8 July 1823 ) was a Scottish portrait painter, the country's first significant portraitist since the Union to remain based in Scotland.

Portrait, oil on canvas, of John Home ( 1722 – 1808 ) by Sir Henry Raeburn ( 1756 – 1823 ), circa 1795 – 1800

This designer is known primarily for his reverses, with the portrait of the 1823 Two Pounds being the only obverse he engraved, using as a basis a model by Sir Francis Chantrey.

Catholic emancipation however was not fully implemented until the major changes of the Catholic Relief Act of 1829 under the leadership of the Duke of Wellington and Sir Robert Peel, and with the work of the Catholic Association established in 1823.

* Sir Arthur Blyth ( 1823 – 1890 ), thrice Premier of South Australia

On 5 June 1823, a site designated for an education institution had its foundation stone laid by Sir Stamford.

Soane designed several public buildings in London, including: National Debt Redemption Office ( 1817 ) demolished 1900 ; Insolvent Debtors Court ( 1823 ) demolished 1861 ; Privy Council and Board of Trade Offices, Whitehall ( 1823 – 24 ) remodelled by Sir Charles Barry the building now houses the Cabinet Office ; in a new departure for Soane he used the Italianate style for The New State Paper Office, ( 1829 – 1830 ) demolished 1868 to make way for the Foreign and Commonwealth Office building.