Barbara of Cilli

Barbara of Cilli (1392 – 11 July 1451) (also sometimes known as "Barbara of Celje") was the spouse of Holy Roman Emperor Sigismund and as such Holy Roman Empress. She was by marriage also Queen of Hungary and Bohemia. She received the sobriquet "Messalina of Germany" for her political intrigues, and was instrumental in creating the Order of the Dragon. She served as the regent of Hungary in the absence of her husband.