Portrait of a Lady by Rogier van der Weyden https://www.nga.gov/artworks/51-portrait-lady
This painting is an outstanding example of the abstract elegance characteristic of Rogier’s late portraits. Although the identity of the sitter is unknown, her air of self–conscious dignity suggests that she is a member of the nobility.
, Files Regarding Works of Art, Box 302, folders 7-8, Getty Research Institute, Los