Died in 1826

Jan 3 Louis-Gabriel Suchet a Marshal of France and one of Napoleon's most brilliant generals.
Jan 3 Nikolay Rumyantsev Russia's Foreign Minister and Imperial Chancellor in the run-up to Napoleon's invasion of Russia. He was the son of Field Marshal Pyotr Zadunaisky from the Rumyantsev comital family
Jan 4 Nicolas Fuss a Swiss mathematician, living most of his life in Russia.
Jan 6 John Farey Sr. an English geologist and writer. However, he is better known for a mathematical construct, the Farey sequence named after him
Jan 17 Juan Crisóstomo Arriaga a Spanish composer. He was nicknamed "the Spanish Mozart" after he died, because, like Wolfgang Amadeus Mozart, he was both a child prodigy and an accomplished composer who died young. They also shared the same first and second baptismal names; and they shared the same birthday, January 27
Jan 20 Stanisław Staszic a leading figure in the Polish Enlightenment: a Catholic priest, philosopher, geologist, writer, poet, translator and statesman. A physiocrat, monist, pan-Slavist and laissez-fairist, he supported many reforms in Poland. He is particularly remembered for his political writings during the "Great Sejm" and for his support of the Constitution of 3 May 1791, adopted by that Sejm
Jan 28 Gustaf von Paykull a Swedish friherre and hovmarskalk , ornithologist and entomologist.
Jan 30 Fyodor Rostopchin a Russian statesman, who served as governor of Moscow during the French invasion of Russia.
Feb 14 Johannes Daniel Falk a German publisher and poet.
Feb 16 Lindley Murray an American grammarian.
Feb 25 Peter Ludwig von der Pahlen a Russian courtier who played a pivotal role in the assassination of Emperor Paul. He became a general in 1798, a count in 1799, and was the Military Governor of Petersburg from 1798 to 1801
Mar 1 Friedrich Weinbrenner a German architect and city planner admired for his mastery of classical style.
Mar 5 Charles Paul Landon a French painter and popular writer on art and artists.
Mar 5 Manuel Benito de Castro a Neogranadine politician. He became President of the State of Cundinamarca in 1812 in place of Antonio Nariño
Mar 10 John VI of Portugal King of the United Kingdom of Portugal, Brazil and the Algarves from 1816 to 1822, and, although de facto the United Kingdom over which he ruled ceased to exist, he remained so de jure from 1822 to 1825; after the recognition of Brazilian independence under the 1825 Treaty of Rio de Janeiro, he continued as King of Portugal and the Algarves until his death in 1826. Under the said Treaty he also became Titular Emperor of Brazil for life, while his son, Emperor Pedro I, was both de facto and de jure the monarch of the newly independent country
Mar 13 Johann Baptist von Spix a German biologist. From his expedition to Brazil he brought to Germany a large variety of specimens of plants, insects, mammals, birds, amphibians and fish. They constitute an important basis for today's National Zoological Collection in Munich. Numerous instances of ethnographic collections such as dance masks and the like are now part of the collection of the Museum of Ethnography in Munich
Mar 14 Jean-Baptiste Leschenault de La Tour a French botanist and ornithologist.
Mar 16 Johann Severin Vater a German theologian, biblical scholar, and linguist.
Mar 17 Ferdinand Bauer an Austrian botanical illustrator who travelled on Matthew Flinders' expedition to Australia.
Mar 17 Józef Maksymilian Ossoliński a Polish nobleman, politician, writer, researcher of literature, and founder of the Ossoliński Institute.
Mar 24 Jakob Haibel an Austrian composer, operatic tenor and choirmaster.
Mar 24 Mathieu de Montmorency a prominent French statesman during the French Revolution and Bourbon Restoration.
Mar 29 Johann Heinrich Voss a German classicist and poet, known mostly for his translation of Homer's Odyssey and Iliad into German.
Mar 29 Domenico Pino an Italian soldier. He served as General of Division in Napoleon's Grande Armée
Apr 13 Franz Danzi a German cellist, composer and conductor, the son of the noted Italian cellist Innocenz Danzi. Born in Schwetzingen, Franz Danzi worked in Mannheim, Munich, Stuttgart and Karlsruhe, where he died
Apr 25 Karl Ludwig von Phull a German general in the service of the Kingdom of Prussia and the Russian Empire. Phull served as Chief of the General Staff of King Frederick William III of Prussia in the Battle of Jena-Auerstedt. While in Russian service, he successfully advocated for a scorched earth policy during Napoleon's invasion of Russia
May 2 Antoni Malczewski an influential Polish romantic poet, known for his only work, "a narrative poem of dire pessimism", Maria.
May 13 Christian Kramp a French mathematician, who worked primarily with factorials.
May 16 Elizabeth Alexeievna (Louise of Baden) was, as Elizabeth Alexeievna, , Empress of Russia during her marriage with Emperor Alexander I.
May 25 Amarindra Queen Amarindra ,was the Queen Consort of King Buddha Yodfa Chulaloke , the founder of the Chakri Dynasty. Her birth name was Nak. She was a daughter of a wealthy Mon from Bang Chang, in Samut Songkhram Province
Jun 1 J. F. Oberlin Oberlin was a French pastor from Alsace and a philanthropist. He has been known as John Frederic Oberlin in English, Jean-Frédéric Oberlin in French, and Johann Friedrich Oberlin in German
Jun 3 Nikolay Karamzin a Russian writer, poet, historian and critic. He is best remembered for his History of the Russian State, a 12-volume national history
Jun 5 Carl Maria von Weber a German composer, conductor, pianist, guitarist and critic, one of the first significant composers of the Romantic school.
Jun 7 Joseph von Fraunhofer a German optician.
Jun 26 Pierre-Édouard Lémontey a French lawyer, politician, scholar and historian.
Jun 28 Friedrich August Marschall von Bieberstein an early explorer of the flora and archaeology of the southern portion of Imperial Russia, including the Caucasus and Novorossiya. He complied the first comprehensive flora catalogue of the Crimeo-Caucasian region
Jul 4 Thomas Jefferson an American Founding Father, the principal author of the Declaration of Independence , and the third President of the United States. He was a spokesman for democracy, and embraced the principles of republicanism and the rights of the individual with worldwide influence. At the beginning of the American Revolution, he served in the Continental Congress, representing Virginia, and then served as a wartime Governor of Virginia. In May 1785, he became the United States Minister to France and later the first United States Secretary of State serving under President George Washington. In opposition to Alexander Hamilton's Federalism, Jefferson and his close friend, James Madison, organized the Democratic-Republican Party, and later resigned from Washington's cabinet. Elected Vice President in 1796, Jefferson opposed Adams, and with Madison secretly wrote the Kentucky and Virginia Resolutions, which attempted to nullify the Alien and Sedition Acts
Jul 4 John Adams the second president of the United States , having earlier served as the first vice president of the United States. An American Founding Father, Adams was a statesman, diplomat, and a leading advocate of American independence from Great Britain. Well educated, he was an Enlightenment political theorist who promoted republicanism, as well as a strong central government, and wrote prolifically about his often seminal ideas—both in published works and in letters to his wife and key adviser Abigail Adams. Adams was opposed to slavery, and never owned a slave. After the Boston Massacre, with anti-British feelings in Boston at a boiling point, he provided a principled, controversial, and successful legal defense of the accused British soldiers, because he believed in the right to counsel and the "protect of innocence"
Jul 5 Joseph Proust a French chemist. He was best known for his discovery of the law of constant composition in 1799, stating that in chemical reactions matter is neither created nor destroyed
Jul 5 Stamford Raffles a British statesman, best known for his founding of the city of Singapore and the London Zoo. He is often described as the "Father of Singapore" and the "Father of the London Zoo". He was also heavily involved in the conquest of the Indonesian island of Java from Dutch and French military forces during the Napoleonic Wars and contributed to the expansion of the British Empire. He was also an amateur writer and wrote a book titled The History of Java
Jul 7 Friedrich Dülon one of the most prominent and famous flute-virtuoso musicians of the classical era, being one of the first flutists to be considered gifted on flute. At the age of 40 he had acquired more than 300 concerts in his repertoire. Christian Friedrich Daniel Schubart devoted a 9-verse poem entitled The blind flute player Dülon on the journey.d
Jul 9 Charlotte von Lengefeld the wife of German poet Friedrich Schiller.
Jul 10 Luther Martin a politician and one of United States' Founding Fathers, who refused to sign the Constitution because he felt it violated states' rights. He was a leading Anti-Federalist, along with Patrick Henry and George Mason, whose actions helped passage of the Bill of Rights
Jul 17 Joseph Graetz a German composer, organist, and music educator. In 1790 two of his stage works premiered: the operetta Das Gespenst mit der Trommel and the opera Adelheid von Veltheim. His notable students included Kaspar Ett, Peter Josef von Lindpaintner, and Eduard Rottmanner
Jul 18 Isaac Shelby the first and fifth Governor of the U.S. state of Kentucky and served in the state legislatures of Virginia and North Carolina. He was also a soldier in Lord Dunmore's War, the Revolutionary War, and the War of 1812. While governor, he personally led the Kentucky militia in the Battle of the Thames, an action that was rewarded with a Congressional Gold Medal. Counties in nine states, and several cities and military bases, have been named in his honor. His fondness for John Dickinson's The Liberty Song is believed to be the reason Kentucky adopted the state motto "United we stand, divided we fall"
Jul 22 Giuseppe Piazzi an Italian Catholic priest of the Theatine order, mathematician, and astronomer. He was born in Ponte in Valtellina, and died in Naples. He established an observatory at Palermo, now the Osservatorio Astronomico di Palermo – Giuseppe Vaiana. Perhaps his most famous discovery was the first asteroid, Ceres
Jul 25 Pavel Pestel a Russian revolutionary and ideologue of the Decembrists.
Aug 4 Jean-Jacques Paulet a French mycologist.
Aug 13 René Laennec a French physician. He invented the stethoscope in 1816, while working at the Hôpital Necker and pioneered its use in diagnosing various chest conditions
Aug 26 Józef Zajączek a Polish general and politician.