After the Emperor 's birth mother Yoshiko died suddenly, he was taken in by his grandfather, the Cloistered Emperor Toba and raised by Bifuku mon in ("Sankai ki").
生母の懿子（よしこ）が急死したことで祖父・鳥羽法皇に引き取られ、美福門院により養育された（『山槐記』）。