He died in 1751 and was succeeded by his and Louise-Hippolyte's son Prince Honoré III. Honoré III married Catherine Brignole in 1757 and later divorced her. Before his marriage, Honoré III had been conducting an affair with his future mother-in-law. After her divorce Marie Brignole married Louis Joseph de Bourbon, prince de Condé, a member of the fallen French royal house, in 1798. The Grimaldi fortunes were restored when descendants of both Hortense Mancini and Louis I married: Louise d'Aumont Mazarin married Honoré III's son and heir, the future Honoré IV. This marriage in 1776 was extremely advantageous to the Grimaldi, as Louise's ancestress Hortense Mancini had been the heiress of Cardinal Mazarin. Thus Monaco's ruling family acquired all the estates bequeathed by Cardinal Mazarin, including the Duchy of Rethel, and the Principality of Château-Porcien. Honoré III was a soldier who fought at both Fontenoy and Rocourt. He was happy to leave Monaco to be governed by others, most notably a former tutor. It was on one of Honoré III's rare visits to the palace in 1767 that illness forced Edward, Duke of York, to land at Monaco. The sick duke was allocated the state bedchamber where he promptly died. Since that date the room has been known as the York Room. Despite its lack of continuous occupancy, by the final quarter of the 18th century the palace was once again a "splendid place" ("Illustration 12"). However revolution was afoot, and in the late 1780s Honoré III had to make concessions to his people who had caught the revolutionary ideas from their French neighbours. This was only the beginning of the Grimaldi's problems. In 1793 the leaders of the French Revolution annexed Monaco. The prince was imprisoned in France and his property and estates, including the palace, were forfeited to France. The palace was looted by the prince's subjects, and what remained of the furnishings and art collection was auctioned by the French government. Further changes were heaped on both the country and palace. Monaco was renamed "Fort d'Hercule" and became a canton of France while the palace became a military hospital and poorhouse. In Paris, the prince's daughter-in-law Francoise-Thérèse de Choiseul-Stainville (1766–1794) was executed, one of the last to be guillotined during the Reign of Terror.