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Emperor Reizei
63rd Emperor of Japan
Reign The 25th day of 5th month of Kōhō 4 (967) - The 13th day of 8th month of Anna 2 (969)
Coronation The 11th day of 10th month of Kōhō 4 (967)
Born The 24th day of 5th month of Tenryaku 4 (950)
Birthplace Heian Kyō (Kyōto)
Died The 24th day of 10th month of Kankō 8 (1011)
Place of death Heian Kyō (Kyōto)
Buried Sakuramoto no Misasagi (Kyōto)
Predecessor Emperor Murakami
Successor Emperor En'yū
Father Emperor Murakami
Mother Fujiwara no Anshi
The tomb of Emperor Reizei, Kyoto (front view)

Emperor Reizei (冷泉天皇 Reizei-tennō) (12 June 950 - 21 November 1011) was the 63rd emperor of Japan according to the traditional order of succession. His reign spanned the years from 967 through 969.[1]



Before his ascension to the Chrysanthemum Throne, his personal name (his imina) was Norihira-shinnō (憲平親王).[2] Emperor Reizei is buried in a mausoleum known as Sakuramoto no misasagi in Ukyō-ku, Kyoto.

Norihira-shinnō was the second son of Emperor Murakami. His mother, Empress Yasuko, was a daughter of minister of the right Fujiwara no Morosuke.[3] Soon after his birth he was appointed as crown prince. This decision was supposedly made under the influence of Morosuke and his brother Fujiwara no Saneyori who had seized power in the court.

From ancient times, there have been four noble clans, the Gempeitōkitsu (源平藤橘). One of these clans, the Minamoto clan (源氏) are also known as Genji, and of these, the Reizei Genji (冷泉源氏) are descended from 63rd emperor Reizei.

Events of Reizei's reign

Questions about mental illness made Norihira-shinnō's succession somewhat problematic.

In 967 his father Murakami died and Reizei ascended to the throne at the age of eighteen.

  • Kōhō 4, on the 25th day of the 5th month (967): In the 16th year of Emperor Murakami's reign (村上天皇16年), he died; and the succession (‘‘senso’’) was received by his second son. Shortly thereafter, Emperor Reizei is said to have acceded to the throne (‘‘sokui’’).[4]
  • Anna 2 969: Reizei abdicated; and he took the honorific title of Reizei-in Jōkō. His reign lasted for just two years; and he lived another 44 years in retirement.[5]
  • Kankō 8, 24th day of the 10th month (1011): Daijō-tennō Reizei-in Jōkō died at age 62.[6]


Kugyō (公卿) is a collective term for the very few most powerful men attached to the court of the Emperor of Japan in pre-Meiji eras.

In general, this elite group included only three to four men at a time. These were hereditary courtiers whose experience and background would have brought them to the pinnacle of a life's career. During Go-Toba's reign, this apex of the Daijō-kan included:

Eras of Reizei's reign

The years of Reizei's reign are more specifically identified by more than one era name or nengō.[7]

Consorts and Children

Empress: Imperial Princess Masako (昌子内親王) (950-999), daughter of Emperor Suzaku

Nyōgo: Fujiwara no Fushi/Yoshiko (藤原怤子) (?-?), daughter of Fujiwara no Morosuke (藤原師輔);later, Naishi-no-Kami (尚侍) 982-989

Nyōgo: Fujiwara no Kaishi/Chikako (藤原懐子) (945-975), daughter of Fujiwara no Koretada (藤原伊尹)

  • Imperial Princess Sōshi (宗子内親王) (964-986)
  • Imperial Princess Sonshi (尊子内親王) (966-985), 15th Saiin in Kamo Shrine 968-975; later, married to Emperor En'yū in 980
  • Imperial Prince Morosada (師貞親王) (968-1008) (Emperor Kazan)

Nyōgo: Fujiwara no Chōshi/Tōko (藤原超子) (?-982), daughter of Fujiwara no Kaneie (藤原兼家)

  • Imperial Princess Mitsuko (光子内親王) (973-975)
  • Imperial Prince Okisada (居貞親王) (976-1017) (Emperor Sanjō)
  • Imperial Prince Tametaka (為尊親王) (977-1002)
  • Imperial Prince Atsumichi (敦道親王) (981-1007)


  1. ^ Titsingh, Isaac. (1834). Annales des empereurs du japon, pp. 142-143; Brown, Delmer et al. (1979). Gukanshō, pp. 298-300; Varely, H. Paul. (1980). Jinnō Shōtōki, pp. 190-191.
  2. ^ Titsingh, p. 142; Varely, p. 190; Brown, p. 264. [Up until the time of Emperor Jomei, the personal names of the emperors (their imina) were very long and people did not generally use them. The number of characters in each name diminished after Jomei's reign.]
  3. ^ Varley, p. 190.
  4. ^ Titsingh, p. 142; Brown, p. 298; Varley, p. 44. [A distinct act of senso is unrecognized prior to Emperor Tenji; and all sovereigns except Jitō, Yōzei, Go-Toba, and Fushimi have senso and sokui in the same year until the reign of Emperor Go-Murakami.]
  5. ^ a b c d Brown, p. 298.
  6. ^ Titsingh, p. 155; Brown, p. 306; Varley, p. 190.
  7. ^ Titsingh, p. 142.


See also

Regnal titles
Preceded by
Emperor Murakami
Emperor of Japan:

Succeeded by
Emperor En'yū


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