Born in 1765

Jan 2 Charles Hatchett an English chemist who discovered the element niobium.
Feb 8 Joseph Leopold Eybler an Austrian composer and contemporary of Mozart.
Feb 17 James Ivory (mathematician) a Scottish mathematician.
Mar 7 Nicéphore Niépce a French inventor, now usually credited as the inventor of photography and a pioneer in that field. Niépce developed heliography, a technique he used to create the world's oldest surviving product of a photographic process: a print made from a photoengraved printing plate in 1825. In 1826 or 1827, he used a primitive camera to produce the oldest surviving photograph of a real-world scene. Among Niépce's other inventions was the Pyréolophore, the world's first internal combustion engine, which he conceived, created, and developed with his older brother Claude
Mar 18 David Hendrik Chassé a Dutch soldier who fought both for and against Napoleon. He commanded the Third Netherlands Division that intervened at a crucial moment in the Battle of Waterloo. In 1830 he bombarded the city of Antwerp as commander of its citadel during the Belgian Revolution
Mar 23 Antoine Claire Thibaudeau a French politician.
Mar 27 Franz Xaver von Baader a German Roman Catholic philosopher and theologian.
Apr 1 Luigi Schiavonetti born at Bassano in Venetia.
Apr 6 Charles Felix of Sardinia the Duke of Savoy, Piedmont, Aosta and King of Sardinia from 1821 to 1831.
Apr 9 Antonio Nariño an ideological Colombian precursor and one of the early political and military leaders of the independence movement in the New Granada.
Apr 14 Princess Augusta Wilhelmine of Hesse-Darmstadt the mother of King Ludwig I of Bavaria.
Apr 16 Nikolay Tuchkov a Russian general of the Russo-Swedish War , the suppression of the Kościuszko Uprising and the opposition to the French invasion of Russia. He rose to the rank of lieutenant general and commander of an infantry corps
Apr 26 Emma Lady Hamilton best remembered as the mistress of Lord Nelson and as the muse of George Romney. She was born Amy Lyon in Ness near Neston, Cheshire, England, the daughter of Henry Lyon, a blacksmith who died when she was two months old. She was raised by her mother, the former Mary Kidd, at Hawarden, and received no formal education. She later changed her name to Emma Hart
Apr 27 Johann von Thielmann a Saxon soldier who served with Saxony, Prussia and France during the Napoleonic Wars.
Apr 28 Sylvestre François Lacroix a French mathematician.
May 9 Denis-Luc Frayssinous a French prelate and statesman, orator and writer. He was the eighth member elected to occupy Seat 3 of the Académie française in 1822
May 13 Vieira Portuense a Portuguese painter, one of the introducers of Neoclassicism in Portuguese painting. He was, in the neoclassical style, one of the two great Portuguese painters of his generation, with Domingos Sequeira
May 26 Johann Wolf a German naturalist and ornithologist.
Jun 1 Christiane Vulpius the mistress and wife of Johann Wolfgang Goethe.
Jun 3 Friederike Brun a Danish author and salonist.
Jun 5 James Smithson an English chemist and mineralogist. He was the founding donor of the Smithsonian Institution
Jun 6 Jean-Joseph Chapuis a French cabinetmaker of the 18th and 19th centuries.
Jun 13 Anton Eberl an Austrian composer, teacher and pianist of the Classical period.
Jun 15 Henry Thomas Colebrooke an English orientalist.
Jun 15 Johann Gottlieb Friedrich von Bohnenberger a German astronomer born at Simmozheim, Württemberg. He studied at the University of Tübingen. In 1798, he was appointed professor of mathematics and astronomy at the University
Jun 15 Martin Baum an American businessman and politician.
Jul 4 Pierre Dupont de l'Étang a French general of the French Revolutionary and Napoleonic Wars, as well as a political figure of the Bourbon Restoration.
Jul 27 Duchess Frederica of Württemberg a daughter of Frederick II Eugene, Duke of Württemberg and Friederike Dorothea of Brandenburg-Schwedt.
Jul 29 Jean-Baptiste Drouet Comte d'Erlon a marshal of France and a soldier in Napoleon's Army. D'Erlon notably commanded the I Corps of the Armée du Nord at the battle of Waterloo
Aug 6 Petros Mavromichalis the leader of the Maniot people during the first half of the 19th century. His family had a long history of revolts against the Ottoman Empire, which ruled most of what is now Greece. His grandfather Georgios and his father Pierros were among the leaders of the Orlov Revolt
Aug 18 Louis Aloysius Prince of Hohenlohe-Waldenburg-Bartenstein a German prince and Marshal of France.
Aug 21 William IV of the United Kingdom King of the United Kingdom of Great Britain and Ireland and of Hanover from 26 June 1830 until his death. William, the third son of George III and younger brother and successor to George IV, was the last king and penultimate monarch of Britain's House of Hanover
Aug 22 Carl Ludwig Willdenow a German botanist, pharmacist, and plant taxonomist. He is considered one of the founders of phytogeography, the study of the geographic distribution of plants. Willdenow was also a mentor of Alexander von Humboldt one of the earliest and best known phytogeographers
Aug 25 Georg Friedrich Sartorius a German research historian, economist and professor at Göttingen University.
Aug 28 Tadeusz Czacki a Polish historian, pedagogue and numismatist. Czacki played an important part in the Enlightenment in Poland
Sep 4 Roger de Damas a French Army officer and Royalist general who fought against the French Revolutionary forces for the Russian Empire and the Kingdom of Naples.
Sep 15 Manuel Maria Barbosa du Bocage a Portuguese Neoclassic poet, writing at the beginning of his career under the pen name Elmano Sadino.
Sep 18 Pope Gregory XVI born Bartolomeo Alberto Cappellari EC, reigned from 2 February 1831 to his death in 1846. He had adopted the name Mauro upon entering the religious order of the Camaldolese
Sep 22 Paolo Ruffini an Italian mathematician and philosopher.
Sep 25 Michał Kleofas Ogiński a Polish composer, diplomat and politician, Lithuanian Grand Treasurer, and a senator of the Russian Empire.
Sep 27 Antoine Philippe de La Trémoille a French noble and royalist notable for his military involvement against the French Revolution.
Sep 28 Frederick Christian II Duke of Schleswig-Holstein-Sonderburg-Augustenburg a Danish prince and feudal magnate. He held the island of Als and some other castles in Schleswig
Sep 29 Karl Ludwig Harding a German astronomer notable for having discovered the asteroid 3 Juno.
Sep 30 José María Morelos a Mexican Roman Catholic priest and revolutionary rebel leader who led the Mexican War of Independence movement, assuming its leadership after the execution of Miguel Hidalgo y Costilla in 1811. He was later captured by the Spanish colonial authorities and executed for treason in 1815
Oct 8 Harman Blennerhassett an Anglo-Irish lawyer and politician.
Oct 17 Henri Jacques Guillaume Clarke a Marshal of France and French politician of Irish descent.
Oct 22 Daniel Steibelt a German pianist and composer who died in Saint Petersburg, Russia.
Oct 24 James Mackintosh a Scottish jurist, Whig politician and historian. His studies and sympathies embraced many interests. He was trained as a doctor and barrister, and worked also as a journalist, judge, administrator, professor, philosopher and politician
Oct 27 Nancy Storace an English operatic soprano. The role of Susanna in Mozart's Le nozze di Figaro was written for and first performed by her
Nov 4 Pierre-Simon Girard a French mathematician and engineer, who worked on fluid mechanics.