Emperor Go-Fukakusa

Emperor Go-Fukakusa (1243–1304), the 89th emperor of Japan, ascended in 1246 at two years old when his father Emperor Go-Saga abdicated and kept power as cloistered emperor. In 1259 Go-Saga forced him to step down in favour of his younger brother Emperor Kameyama.

Later, negotiations with the shogunate made his son Hirohito crown prince; in 1287 Hirohito became Emperor Fushimi and Go-Fukakusa ruled as cloistered emperor until taking Buddhist vows in 1290. His descendants formed the Jimyōin-tō line, and another son, Hisaaki, became the eighth Kamakura shōgun.