Isabel, Princess Imperial of Brazil
Dona Isabel , 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 Empires regent on three occasions.
Isabel was born in Rio de Janeiro, the eldest daughter of Emperor Pedro160II and Empress Teresa Cristina, and thus a member of the Brazilian branch of the House of Braganza . After the deaths of her two brothers in infancy, she was recognized as her fathers heiress presumptive. She married a French prince, Gaston, Count of Eu, in an arranged marriage and they had three sons.
Source: Wikipedia