|Emperor of Japan|
|Reign||480 – 484 (traditional)|
|Mother||Katsuragi no Karahime|
|Died||Iware no mikakuri Palace|
|Burial||Kawachi no Sakado no hara no misasagi (Osaka)|
No firm dates can be assigned to this emperor's life or reign, but he is conventionally considered to have reigned from 480–484.
Seinei was a 5th-century monarch. The reign of Emperor Kimmei (509?–571 AD), the 29th emperor, is the first for which contemporary historiography is able to assign verifiable dates; however, the conventionally accepted names and dates of the early emperors were not to be confirmed as "traditional" until the reign of Emperor Kammu (737–806), the 50th sovereign of the Yamato dynasty.
According to Kojiki and Nihonshoki, he was a son of Emperor Yūryaku and his consort Katsuragi no Karahime. Seinei's full sister was Princess Takuhatahime. His name in birth was Shiraka. It is said that the color of his hair was white since birth. After the death of his father, Seinei won the fight against Prince Hoshikawa, his brother, for the throne and so succeeded his father. (Prince Hoshikawa Rebellion)
Seinei's contemporary title would not have been tennō, as most historians believe this title was not introduced until the reigns of Emperor Tenmu and Empress Jitō. Rather, it was presumably Sumeramikoto or Amenoshita Shiroshimesu Ōkimi (治天下大王), meaning "the great king who rules all under heaven." Alternatively, Seinei might have been referred to as (ヤマト大王/大君) or the "Great King of Yamato."
- "Genealogy of the Emperors of Japan" at Kunaicho.go.jp; retrieved 2013-8-28.
- Imperial Household Agency (Kunaichō): 清寧天皇 (22); retrieved 2013-8-28.
- Titsingh, Isaac. (1834). Annales des empereurs du japon, pp. 28-29; Brown, Delmer M. (1979). Gukanshō, pp. 258-259; Varley, H. Paul. (1980). Jinnō Shōtōki, pp. 115-116.
- Ponsonby-Fane, Richard. (1959). The Imperial House of Japan, p. 41.
- Kelly, Charles F. "Kofun Culture," Japanese Archaeology. 27 April 2009.
- Titsingh, pp. 34–36; Brown, pp. 261–262; Varley, pp. 123–124.
- Hoye, Timothy. (1999). Japanese Politics: Fixed and Floating Worlds, p. 78; excerpt, "According to legend, the first Japanese emperor was Jimmu. Along with the next 13 emperors, Jimmu is not considered an actual, historical figure. Historically verifiable Emperors of Japan date from the early sixth century with Kimmei.
- Aston, William. (1896). Nihongi, pp. 109.
- Titsingh, p. 29; n.b., there is speculation that this unusual hair color suggests albinism.
- Aston, William. (1998). Nihongi, Vol. 1, pp. 373–377.
- Ponsonby-Fane, p. 419.
- Aston, William George. (1896). Nihongi: Chronicles of Japan from the Earliest Times to A.D. 697. London: Kegan Paul, Trench, Trubner. OCLC 448337491
- Brown, Delmer M. and Ichirō Ishida, eds. (1979). Gukanshō: The Future and the Past. Berkeley: University of California Press. 10-ISBN 0-520-03460-0; 13-ISBN 978-0-520-03460-0; OCLC 251325323
- Nippon Gakujutsu Shinkokai (1969). The Manyōshū: The Nippon Gakujutsu Shinkokai Translation of One Thousand Poems. New York: Columbia University Press. ISBN 0-231-08620-2
- Ponsonby-Fane, Richard Arthur Brabazon. (1959). The Imperial House of Japan. Kyoto: Ponsonby Memorial Society. OCLC 194887
- Titsingh, Isaac. (1834). Nihon Odai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691
- Varley, H. Paul. (1980). Jinnō Shōtōki: A Chronicle of Gods and Sovereigns. New York: Columbia University Press. 10-ISBN 0-231-04940-4; 13-ISBN 978-0-231-04940-5; OCLC 59145842
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