Alfred Sohn-Rethel was a German Modernist painter of the Düsseldorf school of painting art movement. He was active in Düsseldorf, Berlin, Paris, and Barbizon.
Alfred Sohn-Rethel, Self-portrait (c. 1899)
Hugo Crola was a German portrait, landscape and genre painter, associated with the Düsseldorfer Malerschule.
The artist's mother, Elisabeth née Fränkel