* 1801 – Joseph Lanner, Austrian composer and conductor ( d. 1843 )

* 1872 – William Frederick Horry, English convicted murderer ( b. 1843 )

* 1779 – Francis Scott Key, American lawyer, author, and songwriter ( d. 1843 )

* 1843 – Robert Todd Lincoln, American lawyer and politician, 35th United States Secretary of War ( d. 1926 )

* Haliotis semiplicata Menke, 1843 – the semiplicate abalone

* 1843 – The Cathedral of Our Lady of Peace in Honolulu, Hawaii is dedicated.

* 1843 – Tivoli Gardens, one of the oldest still intact amusement parks in the world, opens in Copenhagen, Denmark.

* 1774 – Robert Southey, English poet and biographer ( d. 1843 )

* 1843 – C. I. Scofield, American theologian, minister, and writer ( d. 1921 )

* 1843 – William Southam, Canadian publisher ( d. 1932 )

* 1843 – David B. Hill, American politician, 29th Governor of New York ( d. 1910 )

He validated his theory by converting carbon disulfide, in several steps, to acetic acid ( 1843 – 45 ).

* 1843 – Alice of the United Kingdom ( d. 1878 )

Work was also progressing on the northern half of the West Wing ( The Egyptian Sculpture Gallery ) 1826 – 1831, with Montagu House demolished in 1842 to make room for the final part of the West Wing, completed in 1846, and the South Wing with its great colonnade, initiated in 1843 and completed in 1847, when the Front Hall and Great Staircase were opened to the public.

* Charles Bill ( 1843 – 1915 ), British Conservative Party Member of Parliament ( MP ) Leek 1892 – 1906

#*** Charles Albert Edmond Bonaparte ( 1843 – 1847 )

Clausewitz, Hermann von Boyen ( 1771 – 1848 ) and Karl von Grolman ( 1777 – 1843 ) were Scharnhorst's primary allies in his efforts to reform the Prussian army between 1807 and 1814.

** Etty Darwin ( 1843 – 1929 ), daughter of Charles Darwin ( 1809 – 1882 )

* 1843 – Lydia Koidula, Estonian poet ( d. 1886 )

The Dominicans of the province of France furnished Lacordaire ( 1835 – 1836, 1843 – 1851 ), Jacques Monsabré ( 1869 – 1870, 1872 – 1890 ), Joseph Ollivier ( 1871, 1897 ), Thomas Etourneau ( 1898 – 1902 ).

Robert Todd Lincoln was born in 1843 and Edward Baker Lincoln ( Eddie ) in 1846.

In 1842 he became an assistant to Robert Bunsen at the University of Marburg ; he took his doctoral degree there in 1843.

* Friedrich Robert Helmert 1843 – 1917, Potsdam ( Germany )

Heinrich Hermann Robert Koch (; 11 December 1843 – 27 May 1910 ) was a German physician.

The M ' Naghten Rules of 1843 were not a codification or definition of insanity but rather the responses of a panel of judges to hypothetical questions posed by Parliament in the wake of Daniel M ' Naghten's acquittal for the homicide of Edward Drummond, whom he mistook for British Prime Minister Robert Peel.

* 1910 – Robert Koch, German physician, Nobel laureate ( b. 1843 )

In 1876, Robert Koch ( 1843 – 1910 ) established that microbes can cause disease.

They arise from the attempted assassination of the British Prime Minister, Robert Peel, in 1843 by Daniel M ' Naghten.

With the death in 1843 of Robert Southey, Wordsworth became the Poet Laureate.

In the second ministry of Robert Peel he served as President of the Board of Trade ( 1843 – 44 ).

* July 26 – Robert Todd Lincoln, American statesman and businessman, son of 16th President Abraham Lincoln ( b. 1843 )

* May 27 – Robert Koch, German physician, Nobel laureate ( b. 1843 )

* August 12 – Robert Southey, English poet and biographer ( d. 1843 )

* May 21 – Robert Murray M ' Cheyne, Scottish clergyman ( d. 1843 )

The six hole, diatonic system is also used on baroque flutes, and was of course well known before Robert Clarke began producing his tin whistles c. 1843.

The tapestry was becoming a tourist attraction with Robert Southey complaining of the need to queue to see the work In the 1843 Hand-book for Travellers in France by John Murray III a visit was included on Recommended Route 26 ( Caen to Cherbourg via Bayeux ) and this guidebook led John Ruskin to go there describing it as " the most interesting thing in its way conceivable ".

* Josephine Shaw Lowell ( 1843 – 1905 ), sister of American Civil War hero Robert Gould Shaw, first woman to hold a public office in New York City, and wife of Gen. Charles Russell Lowell

Robert Southey ( or ; 12 August 1774 – 21 March 1843 ) was an English poet of the Romantic school, one of the so-called " Lake Poets ", and Poet Laureate for 30 years from 1813 to his death in 1843.

* Robert Schumann, Paradise and the Peri ( 1843 )

* Robert Adrain ( 1775 – 1843 ), mathematician, considered one of the best mathematical minds of his time, was born in Carrickfergus

Founded in 1843 and initially called Elizabeth, it was renamed after Robert Dale Owen of New Harmony, the town's congressman at the time.