鳥羽天皇
After the death of Emperor Horikawa, Shirakawa's grandson became Emperor Toba. Shirakawa was still alive when Toba abdicated in turn to his son, who became Emperor Sutoku. By the time of his death in 1129, he had ruled as cloistered Emperor for 41 years and through the reigns of three emperors who were effectively little more than figureheads.