A central figure in twentieth century art, the influence of Marcel duchamp 1887-1968 was a crucial to the development of Surrealism, Dada and Conceptual Art. Brother of the artist Raymond Duchamp Villon and half brother of the painter Jacques Villon, Duchamp began to paint in 1908. In 1912, he painted the definitive version of Nude Descending a Staircase, this was shown at the Salon de la Section de Or of that