Who is the son of the man to whom Marie-Thérèse Walter was a mistress?
Marie-Thérèse Walter: Marie-Thérèse Walter (13 July 1909 – 20 October 1977) was the French mistress and model of Pablo Picasso from 1927 to about 1935, and the mother of his daughter Maya Widmaier-Picasso. Marie-Thérèse Walter:  Their relationship began when she was seventeen years old; he was 45 and still living with his first wife, Olga Khokhlova.
i don't know