The Gukanshō ruled from the palace of Akitsushima-no-miya at Muro in what will come to be known as Yamato province.[6]
Traditional history
Kōan is almost certainly a legend. The Kojiki records only his name and genealogy. The Nihonshoki includes Kōan as the fifth of "eight undocumented monarchs" (欠史八代,, Kesshi-hachidai).[7]
Emperor Kōan was the second son of Emperor Kōshō.[6]Jinnō Shōtōki records that his mother was Yosotarashi-no-hime, who was the daughter of Okitsuyoso, and ancestress of the Owari.[8]
Events of Kōan's life
The absence of information about Kōan does not imply that no such person ever existed. Very little information is available for study prior to the reign of the 29th monarch, Emperor Kimmei.[9]
↑Titsingh, Isaac. (1834). Annales des empereurs du japon, p. 5; Brown, Delmer et al. (1979). Gukanshō, p.252; Varley, Paul. (1980). Jinnō Shōtōki, p. 90; Nussbaum, Louis-Frédéric et al. (2002). "Traditional order of Tennō" in Japan encyclopedia, pp. 962-963.