Emperor Uda

Emperor Uda (866–931), personal name Sadami, was Japan's 59th emperor, reigning from 887 to 897. The seventh son of Emperor Kōkō, he was demoted to commoner with the Minamoto surname in 884, then enthroned three years later by Fujiwara no Mototsune.

His attempt to curb Mototsune in the Akō controversy failed, but after 891 he ruled directly, promoted Sugawara no Michizane, and halted the missions to Tang China in 894. He abdicated to his son Emperor Daigo in 897 and died in 931.