Ambroise Vollard (1867-1939) – the pioneer dealer, patron, and publisher who played a key role in promoting and shaping the careers of many of the leading artists during the late 19th and early 20th centuries….
"Vollard's genius lay in his ability to identify undiscovered talent," commented Philippe de Montebello, Director of The Metropolitan Museum of Art. "That Cézanne, Gauguin, Van Gogh, and many others are household names today is in large part due to Vollard's early promotion of their work.
(https://www.metmuseum.org/press/exhibitions/2006/c%C3%A9zanne-to-picasso--ambroise-vollard-patron-of-the-avantgarde)
Over his long life, Vollard organized exhibitions of scores of artists, including Nabis, Gauguin, Van Gogh, Picasso, and Matisse, and promoted the work of artists ranging from Degas to Rouault to Derain and the Fauves.
(https://www.metmuseum.org/art/metpublications/Cezanne_to_Picasso_Ambroise_Vollard_Patron_of_the_Avant_Garde)