Flore Celestine Thérèse Henriette Tristán y Moscoso better known as Flora Tristan was a French-Peruvian socialist writer and 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. Her theories had a trong influence on Karl Marx, Friedrich Engels and Charles Fourier. 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 also the grandmother of the painter Paul Gauguin.