gris portrait of the artists mother

About author:

José Victoriano 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 are closely connected to the emergence of an innovative artistic genre—Cubism, creating several of the movement's most distinctive works.

Reference:
http://en.wikipedia.org/wiki/Juan_Gris