Emperor Montoku

Emperor Montoku (827–858) was the 55th emperor of Japan, reigning from 850 to 858. The eldest son of Emperor Ninmyō, he was made crown prince during the Jōwa Incident of 842 and succeeded his father in 850.

Later that year Fujiwara no Yoshifusa secured the appointment of his own infant grandson, Prince Korehito, as crown prince ahead of Montoku's eldest son, marking the rising power of the Fujiwara regents. In poor health throughout his reign, Montoku died suddenly in 858 at the age of thirty-two.