In 1599, the year after his death, Hideyoshi TOYOTOMI's remains were buried at the summit of Mt. Amidagamine near Hoko-ji Temple in accordance with his will, and Toyokuni-jinja Shrine originated from the mausoleum that was constructed to serve as the guardian shrine of Hoko-ji Temple at the foot of the mountain.
豊臣秀吉の死去の翌年の1599年（慶長4年）、遺体が遺命により方広寺の近くの阿弥陀ヶ峰山頂に埋葬され、その麓に方広寺の鎮守社として廟所が建立されたのに始まる。