Who was this Holy Roman Empress and Queen of Spain, Germany, Italy, Naples and Sicily and Duchess of Burgundy whose influential friends include Leonor de Castro Mello y Meneses?
Leonor de Castro Mello y Meneses Leonor Castro de Mello y Meneses (born 1512, died March 27 of 1546, in Gandía) was the IVth Duchess of Gandia. She was a noble Portuguese and the Lady and close friend of the Empress Isabella of Portugal. She was daughter of Álvaro de Castro "the Old", Captain-general of Africa of King Manuel I of Portugal, and of Isabel de Melo Barreto e Meneses. Her brother, Rodrigo de Castro, was governor of the Portuguese seat of Safí (Morocco).
Eleonora Gonzaga (1630–1686) Eleonora Gonzaga (18 November 1630 – 6 December 1686), was by birth Princess of Mantua, Nevers and Rethel from the Nevers branch of the House of Gonzaga and by marriage Holy Roman Empress, German Queen, Queen consort of Hungary and Bohemia.