Born in 1803

Jan 1 Manuel Felipe de Tovar President of Venezuela from 1859–1861.
Jan 1 Rudolf Keyser a Norwegian historian, archaeologist and educator.
Jan 1 Guglielmo Libri Carucci dalla Sommaja an Italian count and mathematician, who became known for his love and subsequent theft of ancient and precious manuscripts.
Jan 2 George Henry Calvert an American editor, essayist, dramatist, poet, and biographer. He was the Chair of Moral Philosophy at the newly established College of Arts and Sciences at the University of Baltimore, and in 1854 he served as Mayor of Newport, Rhode Island
Jan 3 Guglielmo Gasparrini an Italian botanist and mycologist.
Jan 3 Douglas William Jerrold an English dramatist and writer.
Jan 9 Yakov Rostovtsev a leading figure in the formulation of statutes which effectively emancipated the Russian serfs.
Jan 15 William Starling Sullivant a US bryologist.
Jan 15 Heinrich Daniel Ruhmkorff a German instrument maker who commercialised the induction coil.
Jan 15 Marjorie Fleming a Scottish child writer and poet.
Jan 18 Francis Grant (artist) a Scottish portrait painter, who painted Queen Victoria and many distinguished British aristocratic and political figures of the day. He served as President of the Royal Academy
Jan 19 Sarah Helen Whitman a poet, essayist, transcendentalist, Spiritualist and a romantic interest of Edgar Allan Poe.
Jan 29 Sir James Outram 1st Baronet an English general who fought in the Indian Rebellion of 1857.
Feb 2 Albert Sidney Johnston served as a general in three different armies: the Texian Army, the United States Army, and the Confederate States Army. He saw extensive combat during his military career, fighting actions in the Texas War of Independence, the Mexican-American War, the Utah War, and the American Civil War
Feb 4 George Newport a prominent English entomologist. He was the first of four children of William Newport , a local wheelwright, and Sarah Gillham
Feb 15 Karl Friedrich Schimper a German botanist, naturalist and poet. Born in Mannheim, he was a theology student at Heidelberg University and taught at Munich University. He pioneered research in the field of plant morphology, particularly phyllotaxis. He is perhaps best known as the originator of the theory of prehistoric hot and cold eras, and was one of the initiators of the modern theories of ice ages and climatic cycles. He was a brother of botanist Georg Wilhelm Schimper and cousin of botanist Wilhelm Philippe Schimper
Feb 15 John Sutter a Swiss pioneer of California known for his association with the California Gold Rush by the discovery of gold by James Marshall and the mill making team at Sutter's Mill, and for establishing Sutter's Fort in the area that would eventually become Sacramento, the state's capital. Although famous throughout California for his association with the Gold Rush, Sutter saw his business ventures fail while those of his elder son, John Augustus Sutter, Jr., were more successful
Feb 15 Friedrich Ludwig Persius a Prussian architect and a student of Karl Friedrich Schinkel.
Feb 16 Louis-Antoine Garnier-Pagès a French politician who fought on the barricades during the revolution of July.
Feb 17 Lockroy a French actor and playwright.
Feb 17 Edgar Quinet a French historian and intellectual.
Feb 18 Camille Roqueplan a French romantic painter of landscapes, historical subjects, and genre scenes, and a lithographer. He was born Camille-Joseph-Étienne Roqueplan in Mallemort, Bouches-du-Rhône, and died in Paris. He studied in Paris with Antoine-Jean Gros and Alexandre Abel de Pujol and became a student at the École des Beaux-Arts in February 1818
Feb 19 Tanneguy Duchâtel a French politician. He was Minister of the Interior in the Cabinet of François-Pierre Guizot , losing office in the February Revolution
Feb 23 Princess Alexandrine of Prussia the wife and consort to Paul Frederick, Grand Duke of Mecklenburg-Schwerin as well as the daughter of Frederick William III of Prussia and Louise of Mecklenburg-Strelitz.
Feb 26 Arnold Adolph Berthold a German physiologist and zoologist. He studied medicine in Göttingen in 1819 and wrote his thesis under the direction of Johann Friedrich Blumenbach. Berthold became a private lecturer in 1825 and began to teach physiology at the University of Göttingen where he spent the rest of his career. He is known as a pioneer in endocrinology due to his experiments on the role of the gonads in the development of secondary sexual characteristics. He published important works on reptiles and amphibians as well as on avian physiology. In the field of entomology, he authored Natürliche Familien des Tierreichs
Feb 28 Christian Heinrich von Nagel a German geometer.
Mar 3 Alexandre-Gabriel Decamps a French painter.
Mar 4 Nikolay Yazykov a Russian poet and Slavophile who in the 1820s rivalled Alexander Pushkin and Yevgeny Baratynsky as the most popular poet of his generation.
Mar 13 George Walker (chess player) an English chess player and author of The Celebrated Analysis of A D Philidor , The Art of Chess-Play: A New Treatise on the Game of Chess , A Selection of Games at Chess played by Philidor , Chess Made Easy , and Chess Studies.
Mar 13 Aleksander Wielopolski a Polish aristocrat, owner of large estates, and the 13th lord of the manor of Pinczów. In 1862 he was appointed head of Poland's Civil Administration within the Russian Empire under Tsar Alexander II
Mar 15 Alexandre Boreau a French pharmacist and botanist. He is the binomial authority of plants such as Polygonum arenastrum and Pulmonaria longifolia
Mar 17 Alphonse Toussenel a French naturalist, writer and journalist born in Montreuil-Bellay, a small meadows commune of Angers; he died in Paris on April 30, 1885.
Mar 24 Władysław Stanisław Zamoyski a Polish nobleman, politician, and general.
Mar 24 Egerton Ryerson a Methodist minister, educator, politician, and public education advocate in early Ontario, Canada. He was the leading opponent of the closed oligarchy that ran the province, calling it the "Family Compact."
Mar 31 Duchess Marie Louise of Mecklenburg-Schwerin daughter of Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin and consort of Georg, Duke of Saxe-Altenburg.
Apr 1 Miles Joseph Berkeley an English cryptogamist and clergyman, and one of the founders of the science of plant pathology.
Apr 2 Franz Lachner a German composer and conductor.
Apr 2 Carl Adolf Otth a Swiss physician and naturalist. He was the brother of mycologist Gustav Heinrich Otth
Apr 6 Ralph Abercromby 2nd Baron Dunfermline a Scottish nobleman and diplomat, styled The Honourable from 1839 to 1858.
Apr 7 Flora Tristan a socialist writer and activist. She was one of the founders of modern feminism. She wrote several works, the best known of which are Peregrinations of a Pariah , Promenades in London , and The Workers' Union
Apr 7 James Curtiss an American politician who twice served as Mayor of Chicago, Illinois for the Democratic Party.
Apr 10 Johann Jakob Kaup a German naturalist. A proponent of natural philosophy, he believed in an innate mathematical order in nature and he attempted biological classifications based on the Quinarian system
Apr 10 Adolf Heinrich von Arnim-Boitzenburg a German statesman, and the first Prime Minister of Prussia.
Apr 11 Dimitri Gruzinsky a Georgian prince of the House of Bagrationi, the youngest son of Prince Iulon of Georgia and his wife, Princess Salome née Amilakhvari.
Apr 14 Friedrich von Amerling an Austro-Hungarian portrait painter in the court of Franz Josef. He was born in Vienna and was court painter between 1835 and 1880. With Ferdinand Georg Waldmüller he is one of the outstanding Austrian portrait painters of the 19th century
Apr 23 Henry Young the fifth Governor of South Australia, serving in that role from 2 August 1848 until 20 December 1854. He was then the first Governor of Tasmania, from 1855 until 1861
Apr 23 Jules d'Anethan a Belgian Catholic Party politician.
Apr 24 Alexander Dukhnovich a priest, poet, writer, pedagogue, and social activist of the Slavic peoples of the Carpathians. He is considered as the awakener of the Rusyns
Apr 29 James Brooke a British adventurer whose exploits in the Malay Archipelago made him the first White Rajah of Sarawak.
Apr 30 Albrecht von Roon a Prussian soldier and statesman. As Minister of War from 1859 to 1873, Roon, along with Otto von Bismarck and Helmuth von Moltke, was a dominating figure in Prussia's government during the key decade of the 1860s, when a series of successful wars against Denmark, Austria and France led to German unification under Prussia's leadership. A conservative and reactionary supporter of the monarchy, he was an avid modernizer who worked to improve the efficiency of the army