Imagawa Sadayo

Imagawa Sadayo (1326–1420), known in religion as Ryōshun, was a poet and a son of Imagawa Norikuni, constable of Suruga and Tōtōmi. He had taken Buddhist vows when the Ashikaga bakufu named him tandai of Kyūshū in 1371 to crush Prince Kaneyoshi's Southern Court revolt.

He secured northern Kyūshū by 1375. Recalled in 1395 on suspicion of disloyalty and stripped of his posts in 1400, he spent his last years on religion and poetry.