Regency right|thumbnail|Marie de Médicis, by Frans Pourbus the Younger, c. 1606. Museo de Bellas Artes de Bilbao. Within hours after Henry IV's assassination, Marie was confirmed as Regent by the Parliament of Paris on behalf of her son and new King, eight-year-old Louis XIII. She immediately banished her late husband's mistress, Catherine de Balzac d'Entragues, from the court. At first, she kept the closest advisers of Henry IV in the key court positions and took for herself (1611) the title of Governess of the Bastille, although she entrusted the physical custody of this important Parisian fortress to Joachim de Chateauvieux, her knight of honor, who took direct command as a lieutenant of the Queen-Regent.
Regency right|thumbnail|Marie de Médicis, by Frans Pourbus the Younger, c 1606. Museo de Bellas Artes de Bilbao. Within hours after Henry IV's assassination, Marie was confirmed as Regent by the Parliament of Paris on behalf of her son and new King, eight-year-old Louis XIII. She immediately banished her late husband's mistress, Catherine de Balzac d'Entragues, from the court. At first, she kept the closest advisers of Henry IV in the key court positions and took for herself (1611) the title of Governess of the Bastille, although she entrusted the physical custody of this important Parisian fortress to Joachim de Chateauvieux her knight of honor, who took direct command as a lieutenant of the Queen-Regent.