(Cilea: Adriana Lecouvreur). Ten. Duke of Saxony, pretender to the throne of Poland. His lover is the Princesse de Bouillon, but the actress Adriana Lecouvreur is in love with him. He uses Adriana to save the princess being found by her husband in a compromising situation and inadvertently causes the actress's death. Created (1902) by Enrico Caruso.