Dutch realist painter Anton Mauve (1838-1888) was a member of the Hague School and a founder of the Hollandsche Teekenmaatschappij, an international art society that helped legitimize watercolor as its own art form.
Mauve was married to Vincent Van Gogh's cousin, and gave Van Gogh his first painting lessons in 1881. The two corresponded quite frequently, exchanging over 150 letters. Van Gogh adored Mauve for his abilities as a colorist, and Mauve lent the young artist money for a studio.
Tate Museum, London, England
Rijks Museum, Amsterdam, The Netherlands
Van Gogh Museum, Amsterdam, The Netherlands