Jeanne Marie Louise Chaumet-Sousselier was a French painter active at the turn of the twentieth century, known for her refined portraiture and her documented role as a nurse during the First World War. Born Jeanne Marie Louise Chaumet in Paris on 30 March 1869, she later adopted the name Chaumet-Sousselier following her marriage. By the early twentieth century she is recorded as a widow, a status that coincides with the development of her independent artistic career. She died on 19 October 1941 in Neuilly-sur-Seine. Chaumet-Sousselier worked primarily as a portraitist, producing intimate depictions of women, children and men, alongside still lifes and floral compositions. She was particularly skilled in pastel, often enhanced with white highlights, and also worked in oil on canvas. Her style reflects the tradition of French academic realism, combining soft modelling, psychological sensitivity and careful attention to costume and texture. During the First World War, she served as an infirmière major at the voluntary hospital no. 233 bis in Paris, operating under the auspices of the French Red Cross (Union des Femmes de France). For her service, she was awarded the Médaille de la Reconnaissance française. Her painting Portrait d’infirmière, signed M. Chaumet Sousselier, is considered an autobiographical work reflecting this period. She exhibited at the Salon des Artistes Français, and her works continue to appear regularly at auction, including sales at Drouot. Notable examples include pastel portraits such as Portrait of a Man and Portrait of a Young Girl. Chaumet-Sousselier’s legacy combines the qualities of a salon painter with a personal history marked by civic engagement, giving her work both artistic refinement and historical depth.