What was the nickname of the princess that signed the Lei Áurea law?
Isabel, Princess Imperial of Brazil Dona Isabel (English: Isabella; 29 July 1846 – 14 November 1921), nicknamed "the Redemptress", was the heiress presumptive to the throne of the Empire of Brazil, bearing the title of Princess Imperial. She also served as the Empire's regent on three occasions.
Princess Isabella of Bavaria Princess Isabella of Bavaria (Marie Elisabeth Luise Amalie Elvire Blanche Eleonore; 31 August 1863 – 26 February 1924) was the third child and eldest daughter of Prince Adalbert of Bavaria and his wife Infanta Amelia Philippina of Spain. By her marriage to Prince Thomas, Duke of Genoa, she became referred to as the Duchess of Genoa.