The House of Della Rovere (pronounced [della ˈroːvere]; literally "of the oak tree") was a powerful Italian noble family. It had humble origins in Savona, in Liguria, and acquired power and influence through nepotism and ambitious marriages arranged by two Della Rovere popes: Francesco Della Rovere, who ruled as Sixtus IV from 1471 to 1484 and his nephew Giuliano, who became Julius II in 1503. Sixtus IV built the Sistine Chapel, which was named after him. Julius II was patron to Michelangelo, Raphael and many other Renaissance artists and started the modern rebuilt of St. Peter's Basilica. Also the Basilica of San Pietro in Vincoli in Rome was the family church of the Della Rovere. Members of the family were influential in the Church of Rome, and as dukes of Urbino, dukes of Sora and lords of Senigallia; the title of Urbino was extinguished with the death of Francesco Maria II in 1631, and the family died out with the death of his granddaughter Vittoria, Grand Duchess of Tuscany.
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Grand Duchess of Tuscany in the context of Maria Theresa
Maria Theresa (Maria Theresia Walburga Amalia Christina; 13 May 1717 – 29 November 1780) was the ruler of the Habsburg monarchy from 1740 until her death in 1780, and the only woman to hold the position in her own right. She was the sovereign of Austria, Hungary, Croatia, Bohemia, Transylvania, Slavonia, Mantua, Milan, Moravia, Galicia and Lodomeria, Dalmatia, Austrian Netherlands, Carinthia, Carniola, Gorizia and Gradisca, Austrian Silesia, Tyrol, Styria and Parma. By marriage, she was Duchess of Lorraine, Grand Duchess of Tuscany, and Holy Roman Empress.
Maria Theresa started her 40-year reign when her father, Charles VI, Holy Roman Emperor, died on 20 October 1740. Charles VI paved the way for her accession with the Pragmatic Sanction of 1713 and spent his entire reign securing it through international diplomacy. He neglected the advice of Prince Eugene of Savoy, who believed that a strong military and a rich treasury were more important than mere signatures. Eventually, Charles VI left behind a weakened and impoverished state, particularly due to the War of the Polish Succession and the Russo-Turkish War (1735–1739). Moreover, upon his death, Saxony, Prussia, Bavaria, and France all repudiated the sanction they had recognised during his lifetime. Frederick II of Prussia (who became Maria Theresa's greatest rival for most of her reign) promptly invaded and took the affluent Habsburg province of Silesia in the eight-year conflict known as the War of the Austrian Succession. In defiance of the grave situation, she managed to secure the vital support of the Hungarians for the war effort. During the course of the war, Maria Theresa successfully defended her rule over most of the Habsburg monarchy, apart from the loss of Silesia and a few minor territories in Italy. Maria Theresa later unsuccessfully tried to recover Silesia during the Seven Years' War.
Grand Duchess of Tuscany in the context of Princess Sibylle of Saxe-Lauenburg
Sibylle of Saxe-Lauenburg (Franziska Sibylle Auguste; 21 January 1675 – 10 July 1733) was Margravine of Baden-Baden. Born a Duchess of Saxe-Lauenburg, she was the wife of Louis William, Margrave of Baden-Baden, a famous Imperial general who was known as the Türkenlouis. She was the consort of the ruler of Baden-Baden (1690–1707) and regent (1707–1727) durng the minority of her son Louis George. Her older sister Anna Maria Franziska of Saxe-Lauenburg was the future Grand Duchess of Tuscany as the wife of Gian Gastone de' Medici.
Grand Duchess of Tuscany in the context of Elisa Bonaparte
Maria Anna Elisa Bonaparte Baciocchi Levoy (French: Marie Anne Elisa Bonaparte; 3 January 1777 – 7 August 1820), better known as Elisa Bonaparte, was an imperial French princess and sister of Napoleon Bonaparte. She was Princess of Lucca and Piombino (1805-1814), Grand Duchess of Tuscany (1809-1814) and Countess of Compignano by appointment of her brother.
She was the fourth surviving child and eldest surviving daughter of Carlo Buonaparte and Letizia Ramolino. A younger sister of Napoleon Bonaparte, she had elder brothers Joseph and Lucien, and younger siblings Louis, Pauline, Caroline and Jerome.