Francis I, because Napoleon Bonaparte demanded that he renounce the title of Holy Roman Emperor when he was crowned Emperor of the French) but the fifth (third surviving) child and fourth (second surviving) daughter born from his second marriage with Maria Theresa of Naples and Sicily. Her paternal grandparents were Leopold II, Holy Roman Emperor and Maria Luisa of Bourbon, Infanta of Spain and her maternal grandparents were King Ferdinand IV & III of Naples and Sicily (later King Ferdinand I of the Two Sicilies) and Archduchess Maria Carolina of Austria. Through both parents (who are double first-cousins), Maria Leopoldina was descended from the House of Habsburg-Lorraine (one of the oldest and most powerful dynasties in Europe, which reigned over Austria from 1282 to 1918, among other territories that reigned and was the oldest reigning house in Europe at the time of Maria Leopoldina's birth) and from the House of Bourbon (a royal dynasty who at the time of her birth reigned over Spain, Naples, Sicily and Parma; the main branch of the family, who reigned in France since 1589, was dethroned after the French Revolution in 1792 but briefly restored during 1814–1830). She was given the name Caroline Josepha Leopoldine Franziska Ferdinanda, according to her main biographer Carlos H. Oberacker Júnior in his work "A Imperatriz Leopoldina: Sua Vida e Sua Época", and confirmed by Bettina Kann in her work "Cartas de uma Imperatriz" and other authors. In one of the essays presented in his work, Oberacker Júnior showed an excerpt of the publication made by the Austrian newspaper Wiener Zeitung on 25 January 1797, who gave the news of the birth of the Archduchess three days before with her full name; he also mentioned that the name "Maria" wasn't present in the preserved baptismal record of the Archduchess, which is in fact true. According to Oberacker Júnior, the Archduchess started using it already on his trip to Brazil, when dealing with some private businesses. In Brazil, she started to sign only Leopoldina, or using the first name Maria, as can be seen in her oath to the Constitution of Brazil in 1822. According to another theory presented by Oberacker Júnior, the Archduchess probably began to use the name "Maria" due to her great devotion to the Virgin Mary and to invoke her protection, and also because all her sisters-in-law used this name. Maria Leopoldina was born during a