1819 births

René Prudent Patrice Dagron (17 March 1817 – 13 June 1900) was a French photographer and inventor. He was born in Aillières-Beauvoir, Sarthe, France.
On 21 June 1859, Dagron was granted the first microfilm patent in history. Dagron is also considered the inventor of the miniature photographic jewels (French: Bijoux photographiques microscopiques) known as Stanhopes because a modified Stanhope lens is used to view the microscopic picture attached to the lens. He is buried at Ivry Cemetery, Ivry-sur-Seine.

Edouard Jean Conrad Hamman (24 September 1819 in Ostend – 30 March 1888 in Paris) was a Belgian painter and engraver who specialized in portraying scenes from the lives of famous artists, scholars and the nobility.

Augustin Marie Morvan (7 February 1819 in Lannilis – 20 March 1897 in Douarnenez) was a French physician, politician, and writer. He is best known for treating the first recorded case of the eponymous Morvan's syndrome, a rare neurological disorder marked by acute insomnia. Morvan served as a deputy to the French National Assembly that inaugurated the Third Republic in 1871. In Brest, France, where he began his medical studies, the Rue Augustin Morvan and the Hôpital Augustin Morvan are named after him.

Ernest Saint-Charles Cosson (22 July 1819 – 31 December 1889) was a French botanist born in Paris.
Cosson is known for his botanical research in North Africa, and during his career he participated in eight trips to Algeria. In several of these he was accompanied by Henri-René Le Tourneux de la Perraudière (1831–1861), whom he honoured in the naming of several species and genera (e.g., Perralderia, Galium perralderii). In 1863 he was elected president of the Société botanique de France, and from 1873 to 1889, he was a member of the Académie des sciences.In 1882 Jules Ferry, as Minister of Public Instruction, decided to create a mission to explore the Regency of Tunisia.
The expedition was headed by Cosson and included the botanist Napoléon Doumet-Adanson and other naturalists.
In 1884 a geological section under Georges Rolland was added to the Tunisian Scientific Exploration Mission.
Rolland was assisted by Philippe Thomas from 1885 and by Georges Le Mesle in 1887.With Jacques Nicolas Ernest Germain de Saint-Pierre (1815–1882), Cosson published the influential Atlas de la Flore des Environs de Paris.Botanical specimens collected by Cosson are held in many herbaria around the world, including the National Museum of Natural History, France, Harvard University Herbaria, the herbarium at the Royal Botanic Gardens, Kew, the National Herbarium of Victoria at the Royal Botanic Gardens Victoria, Copenhagen University Botanical Museum, the New York Botanical Garden, and the Komarov Botanical Institute, among others.

Mary Frances Schervier, TOSF (3 January 1819 – 14 December 1876) was a German Catholic nun who founded two congregations of religious sisters of the Third Order Regular of St. Francis, both committed to serving the neediest of the poor. One, the Poor Sisters of St. Francis, is based in her native Germany, and the other, the Franciscan Sisters of the Poor, was later formed from its province in the United States.
Schervier was beatified by Pope Paul VI in 1974.

Louise Otto-Peters (26 March 1819, Meissen – 13 March 1895, Leipzig) was a German suffragist and women's rights movement activist who wrote novels, poetry, essays, and libretti. She wrote for Der Wandelstern [The Wandering Star] and Sächsische Vaterlandsblätter [Saxon Fatherland Pages], and founded Frauen-Zeitung and Neue Bahnen specifically for women.: 181  She is best known as the founder in 1865 of the General German Women's Association (Allgemeiner Deutscher Frauenverein).: 1 

Albert Schwegler (10 February 1819 – 5 January 1857) was a German philosopher and Protestant theologian.

Benjamin Fillon (15 March 1819 – 23 May 1881) was a French numismatist and archaeologist. Much of his lifetime's work was devoted to researching the French mathematician, Franciscus Vieta, a key figure in developing new algebra.

Paul Jean Clays (27 November 1819 – 10 February 1900) was a Belgian artist known for his marine paintings.

Sir Charles Hallé (born Karl Halle; 11 April 1819 – 25 October 1895) was an Anglo-German pianist and conductor, and founder of The Hallé orchestra in 1858.