Explore 329 historical events from 1820–1829.
Richard August Carl Emil Erlenmeyer, known simply as Emil Erlenmeyer, was a German chemist known for contributing to the early development of the theory of chemical structure and f…
Emil Erlenmeyer, German chemist (died 1909)
Olivier Émile Ollivier was a French statesman. Starting as an avid republican opposed to Emperor Napoleon III, he pushed the Emperor toward liberal reforms and in turn came increas…
Émile Ollivier, French statesman (died 1913)
Addison Crandall Gibbs was an American politician. He was the second governor of Oregon from 1862 until 1866, and previously served in the Oregon Territory's legislative body and l…
A. C. Gibbs, American lawyer and politician, 2nd Governor of Oregon (died 1886)
Georgina Hill was an English cookery book writer who wrote at least twenty-three works. She was born in Kingsdown, Bristol before moving to Tadley, Hampshire in the 1850s. She wrot…
Georgiana Hill, English cookery book writer (died 1903)
Chaim Aronson was a Lithuanian Jewish inventor and memoirist.
Chaim Aronson, Lithuanian engineer and author (died 1893)
István Türr was a Hungarian soldier, revolutionary, canal architect and engineer, remembered in Italy for his role in that country's unification and his association with Garibaldi.…
István Türr, Hungarian soldier, architect, and engineer, co-designed the Corinth Canal (died 1908)
Johann Friedrich Pfaff was a German mathematician. He is best known for his work on differential equations and as Carl Friedrich Gauss's doctoral advisor.
Johann Friedrich Pfaff, German mathematician and academic (born 1765)
Antonio Salieri was an Italian composer and teacher of the classical period. He was born in Legnago, south of Verona, in the Republic of Venice, and spent his adult life and career…
Antonio Salieri, Italian composer and conductor (born 1750)
Claude Henri de Rouvroy, Comte de Saint-Simon, better known as Henri de Saint-Simon, was a French political, economic and socialist theorist and businessman whose thought had a sub…
Claude Henri de Rouvroy, comte de Saint-Simon, French philosopher and theorist (born 1760)
Odysseas Androutsos was a Greek armatolos in eastern continental Greece and a prominent figure of the Greek War of Independence.
Odysseas Androutsos, Greek soldier (born 1788)
Pierre "Peter" Charles L'Enfant was a French-American artist, professor, and military engineer. In 1791, L'Enfant designed the baroque-styled plan for the development of Washington…
Pierre Charles L'Enfant, French-American architect and engineer, designed Washington, D
Thomas Peabody Grosvenor was a United States representative from New York.
Thomas P. Grosvenor, American soldier and politician (born 1744)
Admiral of the Red William Waldegrave, 1st Baron Radstock, GCB was a Royal Navy officer and colonial administrator who served as the governor of Newfoundland.
William Waldegrave, 1st Baron Radstock, English admiral and politician, Governor of Newfoundland (born 1753)
The National Gallery is an art museum in Trafalgar Square in the City of Westminster, in Central London, England. Founded in 1824, it houses a collection of more than 2,300 paintin…
The National Gallery in London opens to the public
Alexander William Williamson FRS FRSE PCS MRIA was an English chemist. He is best known today for the Williamson ether synthesis.
Alexander William Williamson, English chemist and academic (died 1904)
William Walker was an American journalist and mercenary. In the era of the expansion of the United States, driven by the doctrine of manifest destiny, Walker organized unauthorized…
William Walker, American physician, lawyer, journalist and mercenary (died 1860)
Jacob ben Moses Bachrach was a noted apologist of Rabbinic Judaism. He was descended from Rabbi Yair Chayim Bacharach, and in turn from the Maharal of Prague.
Jacob ben Moses Bachrach, Polish apologist and author (died 1896)
Ludwig van Beethoven was a German composer and pianist. Mentored during the Classical period, he incorporated more complex structure and emotion in his later works. Beethoven's mus…
World premiere of Ludwig van Beethoven's Ninth Symphony in Vienna, Austria
The Royal Society for the Prevention of Cruelty to Animals (RSPCA) is a charity operating in England and Wales which promotes animal Activism. The RSPCA is funded primarily by volu…
A meeting at Old Slaughter's coffee house in London leads to the formation of what is now the Royal Society for the Prev
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: Egyptian forces capture Psara in the Aegean Sea
Costa Rica, officially the Republic of Costa Rica, is a country in Central America. It borders Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, …
Costa Rica annexes Guanacaste from Nicaragua.
Wilhelm Friedrich Benedikt Hofmeister was a German biologist and botanist. He "stands as one of the true giants in the history of biology and belongs in the same pantheon as Darwin…
Wilhelm Hofmeister, German botanist (died 1877)
Levi Parsons Morton was the 22nd vice president of the United States from 1889 to 1893. He also served as United States ambassador to France, as a U.S. representative from New York…
Levi P
Edmund Kirby Smith was a Confederate States Army general, who oversaw the Trans-Mississippi Department from 1863 to 1865. Before the American Civil War, Smith served as an officer …
Edmund Kirby Smith, American general (died 1893)