1863 births

Louis Étienne Ravaz or Louis Ravaz (Saint-Romain-de-Jalionas, Isère, 1863 — Montpellier, 1937) was a specialist of ampelography and one of the creators of modern viticulture. In 1892, he founded the grape research station of Cognac (French: Station viticole de Cognac), that he directed for several years. He was professor of viticulture (and from 1919 director) at the National School of Agriculture of Montpellier (École nationale d’agriculture de Montpellier). He contributed to the diffusion of the use of the American varieties in the regions affected by French blight (Phylloxera) and investigated the pathologies of the grapevine. He published several works on viticulture. With Pierre Viala, he described the causes of the black-rot disease of grapevine and founded the "Revue de viticulture".
He was the taxon author of:

Guignardia Viala & Ravaz, Bull. Soc. mycol. Fr. 8: 63 (1892)

Félix Legueu (12 August 1863 – 2 October 1939) was a French urologist and gynecologist born in Angers.

August Knoblauch (8 January 1863 in Frankfurt am Main – 24 August 1919 in Frankfurt am Main) was a German neurologist. He was a nephew of chemist August Kekulé.
He studied medicine and sciences at the universities of Berlin, Bonn, Strasbourg and Heidelberg. In 1888 he received his doctorate at the University of Heidelberg, where he studied under neurologist Wilhelm Heinrich Erb. In 1898 he was named head of the city infirmary in Frankfurt, then in 1914 was named director of the neurological clinic at the University of Frankfurt am Main.In 1893 he was named first secretary at the Senckenbergischen Naturforschenden Gesellschaft in Frankfurt, where he later served as second director (from 1896) and first director (from 1899).He is best remembered for his research on the cognitive function regarding music; in 1888/90 he put forth a detailed diagrammatic model of music processing, and postulated the existence of nine disorders of music production and perception. He is credited with coining the term "amusia" — being defined as the inability to recognize musical tones or being unable to reproduce them.

Carl von Hess (7 March 1863, in Mainz – 28 June 1923, in Possenhofen) was a German ophthalmologist known for his work in ocular physiology.
He studied medicine at the universities of Heidelberg, Bonn and Strasbourg, then traveled to Prague, where he worked with ophthalmologist Hubert Sattler and physiologist Ewald Hering. In 1891 he obtained his habilitation from the University of Leipzig, and later on, he held professorships at the universities of Marburg (from 1896), Würzburg (from 1900) and Munich (from 1912).He made significant contributions in his studies of refraction and accommodation of the eye. He also conducted research on color vision in the various retinal zones, on the various forms of color blindness, of simultaneous contrast, on afterimages of moving objects and of light-dark adaptation. In addition, he performed comparative physiological studies on light sense and color vision involving animals, in invertebrates as well as vertebrates. Along with Paul Römer, he made the discovery that trachoma is transmissible to monkeys.His name is associated with the "Hess afterimage", defined as a positive afterimage that occurs third in the series of afterimages that are the result of exposure to a brief light stimulus (sequentially, the first afterimage is referred to as a "Hering afterimage", the second as a "Purkinje afterimage"). The Hess afterimage is defined as a physiological illusion. There are also several surgical instruments that are named after him.

Barbara Elisabeth van Houten (8 April 1863 – 27 May 1950) was a Dutch painter.

Hugo Becker (born Jean Otto Eric Hugo Becker, 13 February 1863, died 30 July 1941) was a prominent German cellist, cello teacher, and composer. He studied at a young age with Alfredo Piatti, and later Friedrich Grützmacher in Dresden.

Mathilde de Morny (26 May 1863 – 29 June 1944) was a French aristocrat and artist. Morny was also known by the nickname "Missy" or by the artistic pseudonym "Yssim" (an anagram of Missy), or as "Max", "Uncle Max" (French: Oncle Max), or "Monsieur le Marquis". Active as a sculptor and painter, Morny studied under Comte Saint-Cène and the sculptor Édouard-Gustave-Louis Millet de Marcilly.

Lucien Marie François Métivet (January 19, 1863 - July 16, 1932) was a French poster artist, cartoonist, illustrator, and author who achieved notoriety during the Belle Epoque. Best known for his 1893 poster of the chanteuse Eugénie Buffet, he was also a popular cover artist for the Parisian humor magazine Le Rire and a frequent contributor of cartoons and illustrations to it and other magazines, including Journal amusant. He illustrated books by a number of prominent authors of the time and wrote at least two books of his own. Métivet was "a master in caricature, humorous illustration and lithographic techniques" who became "one of the most prominent illustrators of the 19th century."

Joseph Mendes da Costa (4 November 1863 – 20 July 1939) was a Dutch sculptor and teacher.

Léon Levavasseur (8 January 1863 – 26 February 1922) was a French powerplant engineer, aircraft designer and inventor. His innovations included the V8 engine, direct fuel injection, and liquid engine cooling. Primarily associated with the Antoinette company, he continued to experiment with aircraft design after the company went bankrupt.