was the ninth ''

shikken The was a titular post held by a member of the Hōjō clan, officially a regent of the shogunate, from 1199 to 1333, during the Kamakura period, and so he was head of the ''bakufu'' (shogunate). It was part of the era referred to as . During rou ...

'' (regent) of the

Kamakura shogunate The was the feudal military government of Japan during the Kamakura period from 1185 to 1333. Nussbaum, Louis-Frédéric. (2005)"''Kamakura-jidai''"in ''Japan Encyclopedia'', p. 459. The Kamakura shogunate was established by Minamoto no ...

(reigned 1284–1301), and ''

tokusō was the title (post) held by the head of the mainline Hōjō clan, who also monopolized the position of ''shikken'' (regents to the shogunate) of the Kamakura shogunate in Japan during the period of Regent Rule (1199–1333). It’s important not ...

'' (''de facto'' ruler of Japan) from his appointment as regent until his death. Born to the regent Tokimune and his wife from the Adachi family, Sadatoki became a ''shikken'' at age 14 upon the death of his father. Sadatoki was under the guardianship of

Taira no Yoritsuna The Taira was one of the four most important clans that dominated Japanese politics during the Heian, Kamakura and Muromachi Periods of Japanese history – the others being the Fujiwara, the Tachibana, and the Minamoto. The clan is divided ...

Shimotsuki Incident

The Hōjō clan had variously defeated many rival families, leaving only the Adachi clan, with whom the Hōjōs were allies. However, a plot by

Adachi Yasumori Adachi may refer to: People * Adachi (surname) * Adachi clan, a family of samurai * Adachi Ginkō, 19th-century Japanese artist * Tohru Adachi, a fictional character and one of the antagonists of '' Persona 4'' Places * Adachi, Tokyo, a sp ...

to usurp the Hōjō resulted in Sadatoki authorizing Taira no Yoritsuna to attack the Adachi. It is possible Taira no Yoritsuna may have falsified the charges against Yasumori due to political rivalry. The attack occurred in November 1285 and is known as the Shimotsuki (old Japanese name for November) Incident. It was fought near the Adachi residence, and the Adachi were caught unaware. The fighting lasted five hours and Yasumori was forced to commit suicide, along with his family and many supporters. Over 500 died in all and the Adachi family was almost exterminated. Adachi Yasumori was Sadatoki's father's brother-in-law.

Heizen Gate Incident

Sadatoki's soldiers killed Taira no Yoritsuna and 90 of his followers in the Heizen Gate Incident (平禅門の乱, ''Heizenmon no Ran'') in 1293. He did this purge in confusion after the

1293 Kamakura earthquake The 1293 Kamakura earthquake in Japan occurred at about 06:00 local time on 27 May 1293. It had an estimated magnitude of 7.1–7.5 and triggered a tsunami. The estimated death toll was 23,024. It occurred during the Kamakura period, and th ...

Regency ends and death

Sadatoki ended his regency and entered the priesthood in 1301. Some sources claim that, although secluded in a temple, he continued to administer Japan until his death in 1311. He is enshrined with his father and

Hōjō Takatoki was the last '' Tokusō'' and ruling Shikken (regent) of Japan's Kamakura shogunate; the rulers that followed were his puppets. A member of the Hōjō clan, he was the son of Hōjō Sadatoki, and was preceded as ''shikken'' by Hōjō Morotoki. ...

. A mass requiem commemorating the 12th anniversary of Sadatoki's death took place at

Engaku-ji , or Engaku-ji (円覚寺), is one of the most important Zen Buddhist temple complexes in Japan and is ranked second among Kamakura's Five Mountains. It is situated in the city of Kamakura, in Kanagawa Prefecture to the south of Tokyo. Founde ...

in 1323.

Jufuku-ji , usually known as Jufuku-ji, is a temple of the Kenchō-ji branch of the Rinzai sect and the oldest Zen temple in Kamakura, Kanagawa Prefecture, Japan. Ranked third among Kamakura's prestigious Five Mountains, it is number 24 among the pilgrim ...

temple sent 260 priests. {{DEFAULTSORT:Hojo, Sadatoki 1272 births 1311 deaths Sadatoki Regents of Japan People of Kamakura-period Japan