was a after ''
Tenbun'' and before ''
Eiroku''. This period spanned the years from October 1555 through February 1558. Reigning emperors were and .
Change of era
* 1555 : The era name was changed to mark an event or a number of events. The old era ended and a new once commenced in ''Tenbun'' 24.
The name originates from the following Chinese passage: 「祇承宝命、志弘治体」.
Events of the ''Kōji'' era
* 1555 (''Kōji 1, 1st month''): A border war began between
Mōri Motonari
was a prominent ''daimyō'' (feudal lord) in the western Chūgoku region of Japan during the Sengoku period of the 16th century. The Mōri clan claimed descent from Ōe no Hiromoto (大江広元), an adviser to Minamoto no Yoritomo. Motonari w ...
, ''
daimyō
were powerful Japanese magnates, feudal lords who, from the 10th century to the early Meiji era, Meiji period in the middle 19th century, ruled most of Japan from their vast hereditary land holdings. They were subordinate to the shogun and no ...
'' of
Aki Province, and
Sue Harukata, daimyō of
Suō Province.
[Titsingh]
p. 382.
/ref>
* 1555 (''Kōji 1, 11th month''): The Mōri forces surrounded the Sue defenders in the Battle of Itsukushima. When the outcome of the battle became clear, Sue Harutaka committed suicide; and others, including Odomo-no Yoshinaga, followed Harutaka in suicide. This victory, and the subsequent consolidation of the Mōri holdings were owing to Motonari's four sons: Mōri Takamoto, Kikkawa Motoharu, Hoda Motokiyo, and Kobayakawa Takakage.Takeda Shingen
was daimyō, daimyo of Kai Province during the Sengoku period of Japan. Known as "the Tiger of Kai", he was one of the most powerful daimyo of the late Sengoku period, and credited with exceptional military prestige. Shingen was based in a p ...
and Uesugi Kenshin met at the confluence of the Saigawa and the Chikumagawa in Shinano Province
or is an old province of Japan that is now Nagano Prefecture.
Shinano bordered Echigo, Etchū, Hida, Kai, Kōzuke, Mikawa, Mino, Musashi, Suruga, and Tōtōmi Provinces. The ancient capital was located near modern-day Matsumoto, whi ...
; and the fighting was known as the Battles of Kawanakajima.
* 1556 (''Kōji 2''): The Ōmori silver mine fell into the control of the Mōri clan during a campaign in Iwami Province.[Sansom, p. 257.]
* September 27, 1557 (''Kōji 3, 5th day of the 9th month''): Emperor Go-Nara died at age 62.
Notes
References
* Nussbaum, Louis Frédéric and Käthe Roth. (2005). ''Japan Encyclopedia''. Cambridge: Harvard University Press
Harvard University Press (HUP) is an academic publishing house established on January 13, 1913, as a division of Harvard University. It is a member of the Association of University Presses. Its director since 2017 is George Andreou.
The pres ...
.
OCLC 48943301
* Sansom, George Bailey. (1958). ''A History of Japan'', ;
OCLC 16859819
* Titsingh, Isaac. (1834). '' Nihon Ōdai Ichiran''; ou
''Annales des empereurs du Japon''.
Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland
OCLC 5850691
External links
* National Diet Library
The is the national library of Japan and among the largest libraries in the world. It was established in 1948 for the purpose of assisting members of the in researching matters of public policy. The library is similar in purpose and scope to ...
, "The Japanese Calendar
-- historical overview plus illustrative images from library's collection
{{DEFAULTSORT:Koji
Japanese eras
1550s in Japan
16th-century neologisms