This image shows that the Paul Matisse family is connected to Duchamp, through marriage to Alexina (Tiny) Sattler who was previously married to Pierre Matisse is connected to Henri Matisse. Henri Matisse was a student of Frederic Goupil (through his how to paint book). Frederic Goupil employed Vincent Van Gogh’s brother Theo as an art dealer, which connects Duchamp to Van Gogh.