In order to present her at court it was necessary to find a title for her, and as Count Jean du Barry was married himself his brother Guillaume offered himself as nominal husband.
De Goncourt, La du Barry (Paris, 1880); C. Vatel, Histoire de Madame du Barry (1882-1883), based on sources; R.
Flattered and adored at the outset, she very soon furnished a sinister illustration to Beaumarchais Basile; for evil tongues began to calumniate the queen: those of her brothers-in-law, the duc dAiguillon (protector of Madame du Barry and dismissed from the ministry), and the Cardinal de Rohan, recalled from his embassy in Vienna.
The comtesse du Barry was presented at court on the 22nd of April 1769, and became official mistress of the king.
Douglas, The Life and Times of Madame du Barry (London, 1896).