Explore 385 historical events from 1820–1829.
Jan Gotlib "Bogumił" Bloch was a Polish banker and railway financier who devoted his private life to the study of modern industrial warfare. Born Jewish and a convert to Calvinism,…
Jan Gotlib Bloch, Polish theorist and activist (died 1902)
Juhani Aataminpoika alias Kerpeikkari, was a Finnish serial killer. He killed 12 people in southern Finland between October and November of 1849. He has been characterized as the f…
Juhani Aataminpoika, Finnish serial killer (died 1854)
William Smith Clark was an American professor of chemistry, botany, and zoology; a colonel during the American Civil War; and a leader in agricultural education. Raised and schoole…
William S. Clark, American colonel and politician (died 1886)
Thomas Alexander Browne was a British-born Australian police magistrate and author. He published many of his works under the pseudonym Rolf Boldrewood. He is best known for his 188…
Thomas Alexander Browne, English-Australian author (died 1915)
Carl Gegenbaur was a German anatomist and professor who demonstrated that the field of comparative anatomy offers important evidence supporting of the theory of evolution. As a pro…
Carl Gegenbaur, German anatomist and academic (died 1903)
Martin Wiberg was a Swedish inventor. He enrolled at Lund University in 1845 and became a Doctor of Philosophy in 1850.
Martin Wiberg, Swedish philosopher and engineer (died 1905)
Karl August Engelbrekt Ahlqvist, who wrote as A. Oksanen, was a Finnish professor, poet, scholar of the Finno-Ugric languages, author, and literary critic. He served as professor o…
August Ahlqvist, Finnish professor, poet, scholar of the Finno-Ugric languages, author, and literary critic (died 1889)
John Wisden was an English cricketer who played 187 first-class cricket matches for three English county cricket teams, Kent, Middlesex and Sussex. He is now best known for launchi…
John Wisden, English cricketer and businessman (died 1884)
Georg Friedrich Bernhard Riemann was a German mathematician who made profound contributions to analysis, number theory, and differential geometry. In the field of real analysis, he…
Bernhard Riemann, German-Italian mathematician and academic (died 1866)
Sebastian Kindelán y O'Regan, also called Sebastián de Kindelán y Oregón, was a colonel in the Spanish Army who served as governor of East Florida and of Santo Domingo during the S…
Sebastián Kindelán y O'Regan, colonial governor of East Florida, Santo Domingo and Cuba (born 1757)
J. F. Oberlin was an Alsatian pastor and a philanthropist. He has been known as John Frederic(k) Oberlin in English, Jean-Frédéric Oberlin in French, and Johann Friedrich Oberlin i…
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Nikolay Mikhailovich Karamzin was a Russian historian, writer, poet and critic. He is best remembered for his fundamental History of the Russian State, a 12-volume national history…
Nikolay Karamzin, Russian historian and poet (born 1766)
Carl Maria Friedrich Ernst von Weber was a German composer, conductor, virtuoso pianist, guitarist, and critic in the late Classical and early Romantic eras. Best known for his ope…
Carl Maria von Weber, German pianist, composer, and conductor (born 1786)
Joseph Ritter von Fraunhofer was a German physicist and optical lens manufacturer. He made optical glass, an achromatic telescope, and objective lenses. He developed diffraction gr…
Joseph von Fraunhofer, German optician, physicist, and astronomer (born 1787)
Thomas Jefferson was a Founding Father and the third president of the United States from 1801 to 1809. He was the second vice president under John Adams. Jefferson was the primary …
Thomas Jefferson, American architect, lawyer, and politician, 3rd President of the United States (born 1743)
Giuseppe Piazzi was an Italian Catholic priest of the Theatine order, mathematician, and astronomer. He established an observatory at Palermo, now the Osservatorio Astronomico di P…
Giuseppe Piazzi, Italian mathematician and astronomer (born 1746)
Kondraty Fyodorovich Ryleyev was a Russian poet, publisher, and a leader of the Decembrist revolt, which attempted to overthrow the Russian monarchy in 1825.
Kondraty Ryleyev, Russian poet and publisher (born 1795)
John Adams was a Founding Father and the second president of the United States from 1797 to 1801. Before his presidency, he was a leader of the American Revolution that achieved in…
John Adams, American lawyer and politician, 2nd President of the United States (born 1735)
Sir Thomas Stamford Bingley Raffles was a British colonial official who served as the governor of the Dutch East Indies between 1811 and 1816 and lieutenant-governor of Bencoolen b…
Stamford Raffles, English politician, founded Singapore (born 1782)
René-Théophile-Hyacinthe Laennec was a French medical doctor and musician. His skill at carving his own wooden flutes led him to invent the stethoscope in 1816, while working at th…
René Laennec, French physician, invented the stethoscope (born 1781)
Parramatta is a city and major commercial centre in Greater Western Sydney. It is located approximately 24 kilometres (15 mi) west of the Sydney central business district on the ba…
In Parramatta, Australia, Scottish astronomer James Dunlop discovered Centaurus A (pictured), which was later recognised
HMS Beagle was a Cherokee-class 10-gun brig-sloop of the Royal Navy, one of more than 100 ships of this class. The vessel, constructed at a cost of £7,803, was launched on 11 May 1…
HMS Beagle (pictured) departed on her first voyage from Plymouth for a hydrographic survey of the Patagonia and Tierra d
York was a town and the second capital of the colony of Upper Canada. It is the predecessor to the old city of Toronto (1834–1998). It was established in 1793 by Lieutenant-Governo…
In York, Upper Canada, members of the Family Compact destroyed William Lyon Mackenzie's printing press in the Types Riot
The Greek War of Independence, also known as the Greek Revolution or the Greek Revolution of 1821, was a successful war of independence fought by Greek revolutionaries against the …
Greek War of Independence: A combined Egyptian and Ottoman army began an invasion of the Mani Peninsula, but were initia