Events in the year 858 in Japan.
Events
October 7 – Emperor Montoku dies after an 8-year reign. He is succeeded by his 8-year-old son Seiwa as the 56th emperor of Japan, with Fujiwara no Yoshifusa (Seiwa's grandfather) governing as regent and great minister of the Council of State.Varley, p. 166.
Births
Incumbents Monarch: Montoku then Seiwa
Deaths October 7 - Emperor Montoku (born 826)
References