Catherine de' Medici was the wife of King Henry II of France, so she was known as the Queen consort of France. She was a Franco/Italian noblewoman lived 13 April 1519 – 5 January 1589, and was immensely powerful in Europe for a woman at the time. When her husband died, their son was only ten and could not govern France, so she took over as the Regent, someone who steps in as a leader while the actual leader is unavailable. She had several titles at different points of her life, which were as follows: Lady Caterina de' Medici; Lady Caterina de' Medici, Countess of Auvergne; The Duchess of Orléans, Countess of Auvergne; The Dauphine of France and of Viennois, Countess of Auvergne; Her Most Christian Majesty The Queen of France, Countess of Auvergne; and Her Most Christian Majesty The Queen Mother of France, Countess of Auvergne. Quite a prestigious woman, as you can see.