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Emperor Seiwa

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Emperor Seiwa
Emperor of Japan
ReignOctober 7, 858 – December 18, 876
EnthronementDecember 15, 858
BornMay 10, 850
Heian Kyō (Kyōto)
DiedJanuary 7, 881(881-01-07) (aged 30)
Heian Kyō (Kyōto)
Minooyama no misasagi (水尾山陵) (Kyoto)
Among others...
Emperor Yōzei
Posthumous name
Emperor Seiwa (清和天皇)
HouseImperial House of Japan
FatherEmperor Montoku
MotherFujiwara no Akirakeiko

Emperor Seiwa (清和天皇, Seiwa-tennō, May 10, 850 – January 7, 881) was the 56th emperor of Japan,[1] according to the traditional order of succession.[2]

Seiwa's reign spanned the years from 858 through 876.[3]

Traditional narrative


Seiwa was the fourth son of Emperor Montoku. His mother was Empress Dowager Fujiwara no Akirakeiko (明子), also called the Somedono empress (染殿后). Seiwa's mother was the daughter of Fujiwara no Yoshifusa (藤原良房), who was regent and great minister of the council of state.[4] He was the younger half-brother of Imperial Prince Koretaka (惟喬親王; 844–897)



Before his ascension to the Chrysanthemum Throne, his personal name (his imina)[5] was Korehito (惟仁),[6] the first member of the Imperial house to be personally named "-hito" . One meaning of the character 仁 is the Confucian concept of ren. Later it has been a tradition to name the personal name of all male members of the Imperial family this way.

He was also known as emperor as Mizunoo-no-mikado[4] or Minoo-tei.[7]

Events of Seiwa's life


Originally under the guardianship of his maternal grandfather Fujiwara no Yoshifusa, he displaced Imperial Prince Koretaka (惟喬親王) as Crown Prince. Upon the death of his father in 858, Emperor Montoku, he became Emperor at the age of 9, but the real power was held by his grandfather, Yoshifusa.

  • 7 October 858 (Ten'an 2, 27th day of the 8th month): In the 8th year of Montoku-tennō's reign (文徳天皇8年), the emperor died;[6] and the succession (senso) was received by his son. Shortly thereafter, Emperor Seiwa is said to have acceded to the throne (sokui).[8]
  • 15 December 858 (Ten'an 2, 7th day of the 11th month): The emperor's official announcement of his enthronement at age 9 was accompanied by the appointment of his grandfather as regent (sesshō). This is the first time that this high honor has been accorded to a member of the Fujiwara family, and it is also the first example in Japan of the accession of an heir who is too young to be emperor. The proclamation of the beginning of Seiwa's reign was made at the Kotaijingu at Ise Province and at all the tombs of the imperial family.[9]
  • 859 (Jōgan 1, 1st month): All New Year's festivities were suspended because of the period of national mourning for the death of Emperor Montoku.[10]
  • 859 (Jōgan 1): Construction began on the Iwashimizu Shrine near Heian-kyō. This shrine honors Hachiman, the Shinto war god.[11]
  • 869 (Jōgan 10): Yōzei was born, and he was named Seiwa's heir in the following year.[12]
  • 876 (Jōgan 17, 11th month): In the 18th year of Seiwa-tennō's reign (清和天皇18年), the emperor ceded his throne to his five-year-old son, which meant that the young child received the succession (senso). Shortly thereafter, Emperor Yōzei formally acceded to the throne (sokui).[13]
  • 878 (Gangyō 2): Seiwa became a Buddhist priest. His new priestly name was Soshin (素真).[11]
  • 7 January 881 (Gangyō 4, 4th day of the 12th month): Former-Emperor Seiwa died at age 30.[14]



The actual site of Seiwa's grave is known.[1] The emperor is traditionally venerated at the misasagi memorial shrine in the Ukyō-ku ward of Kyoto. The Imperial Household Agency designates this location as Seiwa's mausoleum. It is formally named the Minooyama no Misasagi (清和天皇陵) or Seiwa Tennō Ryō.[15][16] From the site of his tomb the Emperor Seiwa is sometimes referred to as the Emperor Mizunoo (水尾帝, Mizunoo-tei).[17] The kami of Emperor Seiwa is venerated at the Seiwatennō-sha near the mausoleum.[18][19]



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.[20]

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 Seiwa's reign, this apex of the Daijō-kan included:

Eras of Seiwa's reign


The years of Seiwa's reign are more specifically identified by more than one era name or nengō.[6]

Consorts and children

  • Consort (Nyōgo) later Kōtaigō: Fujiwara no Takako (藤原高子; 842–910) later Nijo-kisaki (二条后), Fujiwara no Nagara's daughter
    • First Son: Imperial Prince Sadaakira (貞明親王) later Emperor Yōzei
    • Fourth Son: Imperial Prince Sadayasu (貞保親王; 870–924)
    • Third/Fifth daughter: Imperial Princess Atsuko (敦子内親王; d. 930), 7th Saiin in Kamo Shrine 877–880
  • Consort (Nyōgo): Fujiwara no Tamiko (藤原多美子; d. 886), Fujiwara no Yoshimi's daughter
  • Consort (Nyōgo): Taira no Kanshi (平寛子)
  • Consort (Nyōgo): Princess Kashi (嘉子女王)
  • Consort (Nyōgo): Minamoto no Sadako (源貞子; d. 873)
  • Consort (Nyōgo): Princess Ryūshi (隆子女王)
  • Consort (Nyōgo): Princess Kenshi (兼子女王)
  • Consort (Nyōgo): Princess Chūshi/Tadako (忠子女王; 854–904), Emperor Kōkō's daughter
  • Consort (Nyōgo): Fujiwara no Yoriko (藤原頼子; d. 936), Fujiwara no Mototsune's daughter
  • Consort (Nyōgo): Fujiwara no Kazuko (藤原佳珠子; b. 856), Fujiwara no Mototsune's daughter
    • Seventh Son: Imperial Prince Sadatoki (貞辰親王; 874–929)
  • Consort (Nyōgo): Minamoto no Takeko/Izuko (源厳子; d. 879), Minamoto no Yoshiari's daughter
  • Consort (Nyōgo): Minamoto no Seishi (源済子), Emperor Montoku's daughter
  • Consort (Nyōgo): Minamoto no Kenshi/Atsuko (源喧子)
  • Consort (Nyōgo): Minamoto no Gishi/Yoshiko (源宜子), Minamoto no Okimoto's daughter
  • Court Attendant (Koui): Ariwara no Fumiko (在原文子), Ariwara no Yukihira's daughter
    • Eighth Son: Imperial Prince Sadakazu (貞数親王; 875–916)
    • Imperial Princess Kaneko (包子内親王; d. 889)
  • Court Attendant (Koui): Fujiwara no Yoshichika's daughter
    • Imperial Prince Sadahira (貞平親王; d. 914)
    • Imperial Princess Shikiko (識子内親王; 874–906), 21st Saiō (Imperial Princess serving at Ise Grand Shrine) 877–880
  • Court Attendant (Koui): Tachibana no Yasukage's daughter (d. 924)
    • Imperial Prince Sadakata (貞固親王; 868–930)
  • Court Attendant (Koui): Fujiwara no Nakamune's daughter
    • third Son: Imperial Prince Sadamoto (貞元親王; 870–910)
  • Court Attendant (Koui): Prince Munesada's daughter
  • Court Attendant (Koui): Fujiwara no Sadamune's daughter
    • Imperial Prince Sadayori (貞頼親王; 876–922)
  • Court Attendant (Koui): Fujiwara no Morofuji's daughter
    • Imperial Prince Sadazane (貞真親王; 876–932)
  • Court Attendant (Koui): Fujiwara no Morokazu's daughter
    • Imperial Princess Mōshi (孟子内親王; d. 901)
  • Court Attendant (Koui): Saeki no Sanefusa's daughter
    • Minamoto no Nagami (源長鑒)
    • Minamoto no Nagayori (源長頼; b. 875)
  • Court Attendant (Koui): Ben-no-miyasundokoro (弁の御息所), Ōe no Otondo's daughter
  • Court lady: Kamo no Mineo's daughter
    • Minamoto no Naganori (源長猷; d. 918)
    • Minamoto no Saishi/Noriko (源載子)
  • Court lady: Ōno no Takatori's daughter
    • Minamoto no Nagafuchi (源長淵)





Japanese Imperial kamon — a stylized chrysanthemum blossom
  1. ^ a b Imperial Household Agency (Kunaichō): 清和天皇 (56)
  2. ^ Ponsonby-Fane, Richard. (1959). The Imperial House of Japan, p. 66.
  3. ^ Titsingh, Isaac. (1834). Annales des empereurs du japon, pp. 115–121., p. 115, at Google Books; Brown, Delmer et al. (1979). Gukanshō, pp. 286–288; Varley, H. Paul. Jinnō Shōtōki, pp. 166–17.
  4. ^ a b Varley, p. 166.
  5. ^ Brown, pp. 264; prior to 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.
  6. ^ a b c Titsingh, p. 115., p. 115, at Google Books
  7. ^ Ponsonby-Fane, p. 8.
  8. ^ Brown, pp. 286; 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.
  9. ^ Titsingh, p. 115., p. 115, at Google Books; Brown, p. 286.
  10. ^ Titsingh, p. 116., p. 116, at Google Books
  11. ^ a b c d Brown, p. 288.
  12. ^ Titsingh, p. 122., p. 122, at Google Books
  13. ^ Titsingh, p. 122., p. 122, at Google Books; Varley, p. 44.
  14. ^ Brown, p. 289; Varley, p. 170.
  15. ^ Ponsonby-Fane, p. 421.
  16. ^ "Seiwa Tennō Ryō (清和天皇陵)". Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
  17. ^ "Seiwa Tennō". Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
  18. ^ Ponsonby-Fane, p. 128.
  19. ^ "Seiwatennō-sha (清和天皇社)". Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-18.
  20. ^ Furugosho: Kugyō of Seiwa-tennō
  21. ^ a b Titsingh, p. 119., p. 119, at Google Books
  22. ^ Brown, p. 287.
  23. ^ Brown, p. 287; Nussbaum, Louis-Frédéric. (2005). "Fujiwara no Mototsune" in Japan Encyclopedia, p. 206, p. 206, at Google Books.
  24. ^ "Genealogy". Reichsarchiv (in Japanese). 30 April 2010. Retrieved 3 February 2018.



See also

Regnal titles
Preceded by Emperor of Japan:

Succeeded by