| in?=
| cp=18th century
| c=19th century
| cf=20th century
| yp1=1817
| yp2=1818
| yp3=1819
| year=1820
| ya1=1821
| ya2=1822
| ya3=1823
| dp3=1790s
| dp2=1800s
| dp1=1810s
| d=1820s
| dn1=1830s
| dn2=1840s
| dn3=1850s
}}
1820 was a Leap Year Starting On Saturday (see link for calendar).
Events
Unknown date
Births
- January 17 - Anne Brontë , English author (d. 1849 )
- February 8 - William Tecumseh Sherman , American Civil War general (d. 1891 )
- February 15 - Susan B. Anthony , American suffragist (d. 1906 )
- February 17 - Henri Vieuxtemps , Belgian violinist and composer (d. 1881 )
- February 28 - John Tenniel , English illustrator (d. 1914 )
- March 3 - Henry D. Cogswell , American philanthropist and Temperance Movement pioneer (d. 1900 ).
- March 14 - Victor Emmanuel II Of Italy (d. 1878 )
- May 12 - Florence Nightingale , English nurse (d. 1910 )
- May 27 - Mathilde Bonaparte , Italian princess (d. 1904 )
- July 9 - John Wright Oakes , Landscape Painter (d. 1887 )
- July 23 - Julia Gardiner Tyler , First Lady Of The United States (d. 1889 )
- September 17 - Émile Augier , French dramatist (d. 1889 )
- September 27 - Wilhelm Siegmund Teuffel , German classical scholar (d. 1878 )
- September 29 - Comte De Chambord , claimant to the French throne (d. 1883 )
- October 6 - Jenny Lind , Swedish soprano (d. 1887 )
- November 23 - Isaac Todhunter , English mathematician (d. 1884 )
- November 28 - Friedrich Engels , German social philosopher (d. 1895 )
- Harriet Tubman , American abolitionist activist (d. 1913 )
Deaths
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