Charlotte de Sauve, French courtesan (d. 1617)
Charlotte de Beaune Semblançay, Viscountess of Tours, Baroness de Sauve, Marquise de Noirmoutier (26 October 1551 – 30 September 1617) was a French noblewoman and a mistress of King Henry of Navarre, who later ruled as King Henry IV of France. She was a member of Queen Mother Catherine de' Medici's notorious "Flying Squadron" (L'escadron volant in French), a group of beautiful female spies and informants recruited to seduce important men at Court, and thereby extract information to pass on to the Queen Mother.