In 1800, when women were not respected as artists, Marie-Guillemine Benoist painted this controversial portrait of a “nameless” Black woman. — For more than two centuries, the woman in this famous portrait remained nameless. Although it may not look like it at first glance, this painting is a self-portrait. Do not be confused by its original, demeaning title — Portrait of a Negress. Or by one of the headings under which…