Meitoku

Meitoku (明徳) was a Japanese era name (年号 nengō, "year name") of the Northern Court during the Era of Northern and Southern Courts after Kōō and before Ōei. This period spanned the years from March 1390 to July 1394. After October 1392, Meitoku replaced the Southern Court's nengō (Genchū).

The emperor in Kyoto was Emperor Go-Komatsu (後小松天皇, Go-Komatsu-tennō^?) The Southern Court rival in Yoshino until 1392 was Emperor Go-Kameyama (後亀山天皇, Go-Kameyama-tennō^?).

During the Meiji period, an Imperial decree dated March 3, 1911, established that the legitimate reigning monarchs of this period were the direct descendants of Emperor Go-Daigo through Emperor Go-Murakami, whose Southern Court (南朝, nanchō^?) had been established in exile in Yoshino, near Nara. Until the end of the Edo period, the militarily superior pretender-Emperors supported by the Ashikaga shogunate had been mistakenly incorporated in Imperial chronologies even though it was known that the Imperial Regalia were not in their possession. This illegitimate Northern Court (北朝, hokuchō^?) had been established in Kyoto by Ashikaga Takauji.

...
Wikipedia