|Minister of the Left||Sadaijin|
|Minister of the Right||Udaijin|
|Minister of the Center||Naidaijin|
The Imperial Court in Kyoto was the nominal ruling government of Japan from 794 AD until the Meiji period (1868–1912), after which the court was moved from Kyoto (formerly Heian-kyō) to Tokyo (formerly Edo) and integrated into the Meiji government. The shogunate system came after the Imperial Court, with Minamoto no Yoritomo being the first to establish the post of the shōgun as hereditary, in 1192.
Since Minamoto no Yoritomo launched the shogunate, true power was in the hand of the shōguns, who were mistaken several times for the Emperors of Japan by western countries.
Kenji (建治) is a Japanese era name which followed Bun'ei and preceded Kōan. This period spanned the years from April 1275 to February 1278. The reigning emperor was Go-Uda-tennō (後宇多天皇).
Jōkyū (承久), also called Shōkyū, was a Japanese era name after Kempō and before Jōō. This period spanned the years from April 1219 through April 1222. The reigning emperor was Juntoku-tennō (順徳天皇).
Genkyū (元久) was a Japanese era name after Kennin and before Ken'ei. This period spanned the years from February 1204 through April 1206. The reigning emperor was Tsuchimikado-tennō (土御門天皇).
Kennin (建仁) was a Japanese era name after Shōji and before Genkyū. This period spanned the years from February 1201 through February 1204. The reigning emperor was Tsuchimikado-tennō (土御門天皇).
Kenkyū (建久) was a Japanese era name after Bunji and before Shōji. This period spanned the years from April 1190 through April 1199. The reigning emperor was Go-Toba-tennō (後鳥羽天皇).
The Naidaijin, literally meaning "Inner Minister", was an ancient office in the Japanese Imperial Court. Its role, rank and authority varied throughout the pre-Meiji period of Japanese history, but in general remained as a significant post under the Taihō Code.
The Daijō-daijin or Dajō-daijin was the head of the Daijō-kan during and after the Nara period and briefly under the Meiji Constitution. Equivalent to the Chinese Tàishī (太師).
Daijō Tennō or Dajō Tennō (太上天皇) is a title for an Emperor of Japan who abdicates the Chrysanthemum Throne in favour of a successor.
Minister of the Right was a government position in Japan in the late Nara and Heian periods. The position was consolidated in the Taihō Code of 702. The Asuka Kiyomihara Code of 689 marks the initial appearance of the udaijin in the context of a central administrative body called the Daijō-kan. This early Daijō-kan was composed of the three ministers—the daijō-daijin (Chancellor), the sadaijin and the udaijin.
The Minister of the Left was a government position in Japan in the late Nara and Heian periods. The position was consolidated in the Taihō Code of 702.
Tengi (天喜) was a Japanese era after Eishō and before Kōhei, spanning the years from January 1053 through August 1058. The reigning emperor was Go-Reizei-tennō (後冷泉天皇).
Eiryaku (永暦) was a Japanese era name after Heiji and before Ōhō. This period spanned the years from January 1160 through September 1161. The reigning emperor was Nijō-tennō (二条天皇).
Chōkyū (長久) was a Japanese era name after Chōryaku and before Kantoku. This period spanned the years from November 1040 through November 1044. The reigning emperor was Go-Suzaku-tennō (後朱雀天皇).
Manju (万寿) was a Japanese era name after Jian and before Chōgen. This period spanned the years from July 1024 through July 1028. The reigning emperor was Go-Ichijō-tennō (後一条天皇).
Tenshō (天承) was a Japanese era name after Daiji and before Chōshō. This period spanned the years from 1131 through 1132. The reigning emperor was Sutoku-tennō (崇徳天皇).
Tennin (天仁) was a Japanese era name after Kajō and before Ten'ei. This period spanned the years from August 1108 through July 1110. The reigning emperor was Toba-tennō (鳥羽天皇).
Taira no Tokuko, later known as Kenreimon-in (建礼門院), was the daughter of Taira no Kiyomori and Taira no Tokiko. She was empress-consort of Emperor Takakura.
The Tokushi Yoron is an Edo period historical analysis of Japanese history written in 1712 by Arai Hakuseki (1657–1725).
Ōiryō was a bureau within the Imperial Household Ministry under the Japanese Ritsuryō system. The Bureau of Palace Kitchens was responsible for food preparation for religious ceremonies and feasts within the court. Beginning in the Heian Era, it was controlled by the Nakahara clan.
Daigaku-no-kami (大学頭) was a Japanese Imperial court position and the title of the chief education expert in the rigid court hierarchy. The Imperial Daigaku-no-kami predates the Heian period; and the court position continued up through the early Meiji period. The title and position were conferred in the name of the Emperor of Japan.