that followed. A close friend of Queen Marie Antoinette, she was appointed by her to the vacant post of royal governess for the future Louis XVII. During the revolution, she was incarcerated with her own daughter and doomed to the guillotine when a mysterious gentleman smuggled them out of the prison. After one of her pupils ascended the throne as Charles X he made her an hereditary duchess. Louise Elisabeth de Croÿ, 1st Duchess of Tourzel died in the Château de Groussay on 15 May 1832. The line of Croÿ-Roeulx The line of Counts of Rœulx descends from Jean III de Croÿ (1436–1505), the second son of Antoine le Grand and younger brother of Philippe I. Jean III's grandson, Adrien de Croÿ, 1st Count of Rœulx, served as governor of Flanders and Artois before his death in combat in 1553. His granddaughter is remembered as La Belle Franchine, the beautiful mistress of Alessandro Farnese. In 1609, the senior line of the Counts of Rœulx became extinct, and the county passed to a cadet branch, represented by Eustache de Croÿ (1608–73), governor of Lille and Douai. Eustache's son, Ferdinand Gaston Lamoral de Croÿ, unexpectedly succeeded to the duchy of Croÿ in 1684, when the most senior member of the house, Ernst Bogislaw von Croÿ, had died in Königsberg. After Ferdinand's grandson, 6th Duke of Croÿ, died childless at Le Rœulx in 1767, the line of Croÿ-Rœulx expired and the Château du Rœulx together with the ducal title passed to the line of Croÿ-Solre (see below). Probably the most illustrious member of the Croÿ-Rœulx branch was Eustache's nephew, Charles Eugène de Croÿ (1651–1702). He participated in the Battle of Lund (1676) against the Swedes before succeeding to his father's title as Prince of Croÿ-Millendonck in 1681. Charles Eugene fought with success in the Imperial Austrian Army against the Turks and participated in both the liberation of Vienna in 1683 and the attack on Belgrade in 1690. He was promoted Imperial field marshal for his vital services to the Austrian crown. In 1697 he entered the Russian service and was put in charge of Peter I's forces fighting in Livonia during the initial stages of the Great Northern War. After suffering a humiliating defeat in the Battle of Narva on 20 November 1700, Charles Eugene was taken prisoner by the Swedes and died at their fortress of Reval on 30 January 1702. On