The most startling and horrible feature of these entertainments was the fact that the regent's daughter, the Duchess of Berri, was almost always present. Her life was a romance. Married while a child to the Due de Berri, by her passionate temper and her levities she was the bane of her husband's life. She embraced the infidel and licentious doctrines of the age in company with her father, and the pair were so fond of each other that the most horrible suspicions began to gain ground. They were dispelled for a time by the discovery of an intrigue between the duchess and her chamberlain, which so provoked the duke that he seized his wife by the hair and beat her. On his death, which occurred soon afterward, she gave the reins to her passion, and set an example of scandal. At the Luxembourg, where she had apartments, she exhibited the state of a queen, and lover succeeded lover with startling rapidity. At last she seems to have fallen in love with an officer of her guards, named Riom, whose only merit was youth. He subdued her. She became as docile and submissive to him as she had been intractable and haughty with her former lovers, and all Paris was talking of the transformation. After about a year of this _liaison_, she gave birth to a child. During the pains of childbirth she was not expected to live, and the curate of St. Sulpice was sent for in all haste to administer the extreme unction. The ecclesiastic happened to be a rigid champion of morality, and he refused to administer the rite till Riom had been dismissed from the Luxembourg. The duchess would not consent to part with her lover, and for many hours this strange conflict went on by the bedside of the failing woman. The curate was obstinate, however, and no sacrament was administered; but the duchess recovering, the regent used his authority, and sent Riom to join his regiment. It killed his daughter. She invited her father to sup with her, and used all her eloquence to persuade him to let her marry Riom; but the regent remaining firm, she withdrew to her chamber, took to her bed, and died two days afterward. In alluding to the regent's mistresses, a word should be said of the famous Claudine du Tencin, whose adventures shed a flood of light on the morals of the day. She was a pretty girl, of respectable, if not noble family, living in a distant province. To escape from a marriage that was forced on her, she took refuge in a convent. Instead, however, of suiting her habits to her place of residence, she contrived to alter the mode of life at the convent so as to meet her desires, and it became famous for the gayety of its social entertainments and the liveliness of its inmates. One of the gentlemen who were allowed to share its hospitality was the poet Destouches. He was smitten with the pretty Claudine, who acknowledged the charm of his accomplishments, and, after a few months' intimacy, gave birth to a male child, who became the mathematician and philosopher D'Alembert.