page_title: 1820
section_title: July–December
hierarchical_section_title: 1820 / Births / July–December
caption_attribution_description: Engels in 1877 in Brighton
context_page_description: 1820 was a leap year starting on Saturday of the Gregorian calendar and a leap year starting on Thursday of the Julian calendar, the 1820th year of the Common Era and Anno Domini designations, the 820th year of the 2nd millennium, the 20th year of the 19th century, and the 1st year of the 1820s decade. As of the start of 1820, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
context_section_description: July 5 – William John Macquorn Rankine, Scottish physicist, engineer (d. 1872)
  July 9 – John Wright Oakes, landscape painter (d. 1887)
  July 22 – Oliver Mowat, Canadian lawyer, politician (d. 1903)
  July 23 – Julia Gardiner Tyler, First Lady of the United States (d. 1889)
  September 17
  Émile Augier, French dramatist (d. 1889)
  Earl van Dorn, American Confederate general (d. 1863)
  September 20 – John F. Reynolds, American general (d. 1863)
  September 27 – Wilhelm Siegmund Teuffel, German classical scholar (d. 1878)
  September 29 – Henri, Count of Chambord, claimant to the French throne (d. 1883)
  October 5 – David Wilber, American politician (d. 1890)
  October 6 – Jenny Lind, Swedish soprano (d. 1887)
  October 16 – Gillis Bildt, 5th Prime Minister of Sweden (d. 1894)
  October 20 – Benjamin F. Cheatham, Confederate general (d. 1886)
  November 23
  Isaac Todhunter, English mathematician (d. 1884)
  Ludwig von Hagn, German painter (d. 1898)
  November 28 – Friedrich Engels, German social philosopher (d. 1895)
  December 21 – William H. Osborn, American railroad executive (d. 1894)
caption: Friedrich Engels
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