* 1792 – John Lambton, 1st Earl of Durham, English statesman ( d. 1840 )

* 1840 – Laborer slaves in most of the British Empire are emancipated.

* 1770 – Frederick William III of Prussia ( d. 1840 )

* 1840 – Richard von Krafft-Ebing, German psychologist ( d. 1902 )

* 1840 – Ferdinand Hamer, Dutch missionary and bishop ( d. 1900 )

* 1840 – Émile Zola, French novelist and critic ( d. 1902 )

* 1840 – Alexander Cameron Sim, Scottish pharmacist and businessman, founded Kobe Regatta & Athletic Club ( d. 1900 )

* 1798 – Étienne Bobillier, French mathematician ( d. 1840 )

Archery, romance and elite culture in England and Wales, c. 1780 – 1840, 89, 193 – 208.

François-Auguste-René Rodin ( 12 November 1840 – 17 November 1917 ), known as Auguste Rodin ( ; ), was a French sculptor.

* 1840 – Foundation stone for new Palace of Westminster, London, is laid by wife of Sir Charles Barry.

It is named after Ernst Abbe ( 1840 – 1905 ), the German physicist who defined it.

# Lucien Bonaparte ( 1775 – 1840 )

#*** Bathilde Aloïse Léonie Bonaparte ( 1840 – 1861 )

* 12 June 1814 – 3 October 1814 José Gaspar Rodríguez de Francia y Velasco ( 2nd time ); he stayed on as " supreme dictator " 3 October 1814 – 20 September 1840 ( from 6 June 1816 styled " perpetual supreme dictator ")

Soldiers of the Dragon: Chinese Armies 1500 BC – AD 1840.

* George Spencer-Churchill, 5th Duke of Marlborough ( 1766 – 1840 ), elder son of the 4th Duke

* 1888 – Namık Kemal, Turkish poet ( b. 1840 )

* 1914 – Alfred Thayer Mahan, American captain and historian ( b. 1840 )

The Shihab leadership continued until the middle of the 19th century and culminated in the illustrious governorship of Amir Bashir Shihab II ( 1788 – 1840 ) who, after Fakhr-al-Din, was the most powerful feudal lord Lebanon produced.

The Maronite-Druze conflict in 1840 – 60 was an outgrowth of the Maronite Christian independence movement, directed against the Druze, Druze feudalism, and the Ottoman-Turks.

: Minorities in the Middle East: Druze Communities 1840 – 1974, 4 volumes, Slough: Archive Editions ( 2006 ).

According to Partridge ( 1972: 12 ), it dates from around 1840 and arose in the East End of London, however John Camden Hotten in his 1859 Dictionary of Modern Slang, Cant and Vulgar Words states that ( English ) rhyming slang originated " about twelve or fifteen years ago " ( i. e. in the 1840s ) with ' chaunters ' and ' patterers ' in the Seven Dials area of London.

* 1840 – John Philip Holland, Irish inventor ( d. 1914 )

* 1840 – John Boyd Dunlop, Scottish inventor ( d. 1921 )

* Larner, Jr., John W. " Nails and Sundrie Medicines: Town Planning and Public Health in the Harmony Society, 1805 – 1840.

* John D. Ford ( 1840 – 1918 ), American naval officer who served as ship engineer during Civil War and as commander in Spanish-American War

* John Russell Young ( 1840 – 1899 ), American writer, diplomat & Librarian of Congress

The lake is named after Edward John Eyre who was the first European to sight it in 1840.

His fortunes began to improve when John Van Voorst, the leading publisher of naturalist writing, agreed, on the recommendation of Thomas Bell, to publish his Canadian Naturalist ( 1840 ).

# John Fitzgerald Lee ( May 5, 1813 – June 17, 1840 )

Astrophotography, the photography of celestial objects, began in 1840 when John William Draper took an image of the Moon using the daguerreotype process.

** John Brashear, American astronomer ( b. 1840 )

* April 19 – John Addington Symonds, English poet and literary critic ( b. 1840 )

Although the Riksdag of the Estates of 1840 meditated compelling him to abdicate, Charles John survived that abdication controversy and he went on to have his silver jubilee, which was celebrated with great enthusiasm on 18 February 1843.

* John Abbot ( entomologist ) ( 1751 – 1840 / 1 ), American entomologist and ornithologist

In 1840, instead of going to college, John started work in the mill owned by his maternal uncle, John Dickinson.

In 1840, at Monmouth's Shire Hall, Chartist protesters John Frost, Zephaniah Williams and William Jones became the last men in Britain to be sentenced to be hanged, drawn and quartered after being found guilty of treason following riots in Newport that led to 20 deaths.

* Wiltse, Charles M. John C. Calhoun, Nationalist, 1782 – 1828 ( 1944 ) ISBN 0-8462-1041-X ; John C. Calhoun, Nullifier, 1829 – 1839 ( 1948 ); John C. Calhoun, Sectionalist, 1840 – 1859 ( 1951 ); the standard scholarly biography

* John Lowell, Jr. ( lawyer ) ( 1769 – 1840 ), aka The Boston Rebel, Federalist lawyer and son of The Old Judge

John A. Lee's Shining with the Shiner ( 1944 ) tells amusing tales about New Zealand folk hero Ned Slattery ( 1840 – 1927 ) surviving by his wits and beating the Protestant work ethic.

* 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 )