Chūgū

Chūgū was a high-ranking title in historical Japan, primarily used during the Heian period. It referred to the principal wife or empress of the emperor, similar to a queen consort, and held significant political and social influence. The role encompassed both ceremonial duties and political responsibilities, often influencing court affairs. The term distinguished her from other noble women at court, emphasizing her status as the emperor's primary wife. Over time, the position of Chūgū evolved and was replaced with different titles, but historically, it signified one of the highest aristocratic roles within the imperial court hierarchy.