Flore Célestine Thérèse Henriette Tristán y Moscoso (7 April 1803 – 14 November 1844), better known as Flora Tristan, was a French-Peruvian writer and socialist activist.She made important contributions to early feminist theory, and argued that the progress of women's rights was directly related with the progress of the working class.She wrote several works, the best known of which are Peregrinations of a Pariah (1838), Promenades in London (1840), and The Workers' Union (1843). Tristan was the grandmother of the painter Paul Gauguin.