Jan Cornelisz Vermeyen

Jan Vermeyen by Jan Wierix.
Portrait of the Marquis and Catholic Church Cardinal Mercurino Gattinara, Grand Chancellor of the Empire, by Jan Cornelisz Vermeyen (c. 1530), on display at the Royal Museums of Fine Arts, Brussels

Jan Cornelisz Vermeyen, or Jan Mayo, or Barbalonga (c. 1504 – 1559) was a Dutch Northern Renaissance painter.