Anna Rosalie Boch (February 10, 1848-February 25, 1936) was a Belgian painter. In addition, Boch compiled an important collection of impressionist art, and was long believed to have been the only buyer of a van Gogh painting during his lifetime.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Anna_Boch
Woman in a Landscape by Anna Boch
c.1890-1892 / Oil on canvas / 39 3/4″x30 / Stedelijk Museum, Amsterdam, Netherlands
Ann Boch on Artnet: http://www.artnet.com/artists/anna-boch/
Red Vineyard at Arles by Vincent van Gogh
How Many Paintings Did Vincent Sell during His Lifetime?