Pierre Dumont
Pierre Jean Baptiste Louis Dumont (1884 – 1936) more commonly known as Pierre Dumont, was a French artist of the Rouen School.
He was schooled at the Lycée Pierre-Corneille and subsequently studied painting with Joseph Delattre. Dumont founded the Groupe des XXX (1907), and along with Robert Antoine Pinchon, Yvonne Barbier, and Eugène Tirvert founded the Société Normande de Peinture Moderne (1909).
From 1910 to 1916 Dumont lived at the Le Bateau-Lavoir becoming friends with Juan Gris, Max Jacob and Guillaume Apollinaire. He turned towards Cubism during this period and played a crucial role in the organization of the Salon de la Section d'Or at the Galerie La Boétie in Paris, October 1912.
On the photo: Robert Antoine Pinchon, Mrs. Dumont, La Broue, and Pierre_Dumont (from_left_to_right), before the World War I