More to explore:
A portrait of Ana de Mendoza, Princess of Eboli. By Sofonisba Anguissola.
Ana de Mendoza de la Cerda; Princess of Éboli,Countess of Mélito and Duchess of Pastrana. She was considered one of Spain’s greatest beauties, despite having lost an eye in a mock duel with a page when she was young.
A portrait of 16th century Ana de Mendoza y de la Cerda. You can read more about her here: http://madameguillotine.org.uk/2012/02/25/ana-de-mendoza-y-de-la-cerda-princess-of-eboli/