|Emperor of Japan|
|Reign||131 – 190 (traditional)|
|Burial||Saki no Tatanami no misasagi (Nara)|
No firm dates can be assigned to this emperor's life or reign, but he is conventionally considered to have reigned from 131–191.
Seimu is regarded by historians as a "legendary emperor" who might be real; and there is a paucity of information about him. There is insufficient material available for further verification and study. 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.
If Seimu did exist, there is no evidence to suggest that the title tennō was used during the time period to which his reign has been assigned. It is much more likely that he was a chieftain, or local clan leader, and the polity he ruled would have only encompassed a small portion of modern day Japan.
- "Genealogy of the Emperors of Japan" at Kunaicho.go.jp; retrieved 2013-8-28.
- Imperial Household Agency (Kunaichō): 成務天皇 (13); retrieved 2013-8-28.
- Titsingh, Isaac. (1834). Annales des empereurs du japon, pp. 14–15, p. 14, at Google Books; Brown, Delmer M. (1979). Gukanshō, p. 254; Varley, H. Paul. (1980). Jinnō Shōtōki, pp. 99–100.
- Ponsonby-Fane, Richard. (1959). The Imperial House of Japan, p. 34.
- 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.
- Brinkley, Frank. (1915). A History of the Japanese People from the Earliest Times to the end of the Meiji Era, p. 21, p. 21, at Google Books; excerpt, "Posthumous names for the earthly Mikados were invented in the reign of Emperor Kammu (782–805), i.e., after the date of the compilation of the Records and the Chronicles.
- Aston, William George. (1998). Nihongi, Vol. 1, pp. 214–216.
- Ponsonby-Fane, Richard. (1953). Studies in Shinto and Shrines, p. 419.
- Seimu's misasagi – map (lower right)
- 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
- Chamberlain, Basil Hall. (1920). The Kojiki. Read before the Asiatic Society of Japan on 12 April, 10 May, and 21 June 1882; reprinted May 1919. OCLC 1882339
- 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
|Legendary Emperor of Japan