Charles, Prince of Soubise

Charles de Rohan (16 July 17151 July 1787), duke of Rohan-Rohan, seigneur of Roberval, and marshal of France from 1758, was a military man, and a minister to the kings Louis XV and Louis XVI. The last male of his branch of the House of Rohan, he was also the great-grandfather to the duc d'Enghien, executed by Napoleon in 1804. Styled "prince d'Epinoy" at birth, he became the Prince of Soubise after 1749.
Biography.
The prince was born at Versailles on 16 July 1715, the son of Jules, Prince of Soubise, lieutenant captain of the gendarmes of the Royal Guard, and of Anne Julie Adélaïde de Melun. The eldest of five children, he was styled the Prince of Epinoy till his father's death in 1724. 
His parents died in Paris of smallpox in 1724, remaining his siblings, including Marie Louise, making them orphans. His sister lost her husband to smallpox in 1743.
He was entrusted to his grandfather Hercule Mériadec, Duke of Rohan-Rohan, who raised Soubise to the court, where he became the companion of Louis XV, who was the same age as he. One of his great grandmothers was Madame de Ventadour, via his paternal grandmother Anne Geneviève de Lévis; Madame de Ventadour, who died in 1744, was close to her great grandson. 
He accompanied Louis XV in the campaign of 1744-1748 and attained high military rank, which owed more to his courtiership than to his generalship.
Soon after the beginning of the Seven Years' War, through the influence of Madame de Pompadour, he was put in command of a corps of 24,000 men, and in November 1757 he sustained the crushing defeat of Rossbach. Along with the failure to hold Hanover following the Invasion of Hanover (1757) this marked a dramatic turnaround for French fortunes as just months before they had seemed on the brink of victory in Europe.
He was more fortunate, however, in his later military career, and continued in the service until the general peace of 1763, after which he lived the life of an ordinary courtier and man of fashion in Paris.
Marriages and issue.
Charles married three times. His first marriage was in 1734 to Anne Marie Louise de La Tour d'Auvergne (1722–1739), daughter of Emmanuel Théodose de La Tour d'Auvergne and a granddaughter of the famous Marie Anne Mancini; Anne Marie Louise died in 1739 giving birth to a son, who died in 1742. They had one surviving child:
In 1741, he married Princess Anna Teresa of Savoy (1717–1745), a daughter of Victor Amadeus I, Prince of Carignano, and Maria Vittoria Francesca of Savoy (who in turn was an illegitimate daughter of Victor Amadeus II of Sardinia). Anna Teresa (known as "Anne Thérèse de Savoie") gave birth to another daughter:
After Anne Thérèse died in 1745, Charles married that same year Princess Anna Viktoria of Hessen-Rheinfels-Rotenburg (1728–1792). They had no children.
Charles also notably had relationships with Madeleine Guimard and Anne Victoire Dervieux.
Legacy.
Soubise sauce, based on onion and béchamel, is said to have been named after him.