José Victoriano (Carmelo Carlos) González-Pérez (March 23, 1887 – May 11, 1927), better known as Juan Gris was a Spanish painter and sculptor who lived and worked in France most of his life. His works, which are closely connected to an innovative artistic genre Cubism are among the movement's most distinctive.

In Paris, Gris followed the lead of another friend and fellow countryman, Pablo Picasso. He submitted darkly humorous illustrations to journals such as Le Rire, L'assiette au beurre, Le Charivari, and Le Cri de Paris.
Later in 1911, he gave up working as a satirical cartoonist, developing at this time a personal Cubist style. 

In 1924, he designed ballet sets and costumes for Sergei Diaghilev and the famous Ballets Russes.

Gris articulated most of his aesthetic theories during 1924 and 1925. He delivered his definitive lecture, Des possibilités de la peinture, at the Sorbonne in 1924. Major Gris exhibitions took place at the Galerie Simon in Paris and the Galerie Flechtheim in Berlin in 1923 and at the Galerie Flechtheim in Düsseldorf in 1925.

Juan Gris Painted By his friend Amedeo Modigliani in 1915.

 His top auction price was $20.8 million which was set by his 1915 still life titled, Livre, pipe et verres, until Christie's Imp/Mod sale in November 2010, when "Violon et guitare" sold for $28.6 million.

Source: Wikipedia.