Anna Komnene Doukaina, Princess of Achaea
Anna Komnene Doukaina (died 4 January 1286), known in French as Agnes, was princess-consort of the Principality of Achaea in 1258–1278 and regent between 1259–1262, during the captivity of her husband, Prince William II of Villehardouin, by the Byzantine emperor Michael VIII Palaiologos. After William II's death in 1278, she re-married to the powerful baron Nicholas II of Saint Omer.