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 Marie Isabelle of Orléans Marie Isabelle de Orléans y de Borbón (María Isabel Francisca de Asís Antonia Luisa Fernanda Cristina Amelia Felipa Adelaida Josefa Elena Enriqueta Carolina Justina Rufina Gasparina Melchora Baltasara Matea; 21 September 1848 – 23 April 1919) was born an infanta of Spain and a Princess of Orléans and became the Countess of Paris by marriage.