Sorel, the daughter of a soldier, Jean Soreau and of Catherine de Maignelais, was twenty years old when she was first introduced to King Charles. At that time, she was holding a position in the household of Rene I of Naples. It is said that she was not only an extraordinarily beautiful young woman, but also extremely intelligent. The French king was immediately smitten by her charms and he gave her Chateau Loches as her private residence.
Soon, her presence was felt at the royal court in Chinon where her company brought the king out of a protracted depression. She had a very strong influence on the king, and that, in addition to her extravagant tastes, earned her a number of powerful enemies at court.
Agn? gave birth to three daughters: Marie de Valois, Charlotte and Jeanne de France. While pregnant with their fourth child, she joined Charles on the campaign of 1450 in Jumi?es, wanting to be with him as moral support. There, she suddenly became ill and died on February 9 at the age of 28.
Charles's son, the future King Louis XI, had been in open revolt against his father for the previous four years. It has been speculated that he poisoned Agn? in order to remove what he may have considered her undue influence over the king.
See also: French royal mistresses