Ōuchi clan

Ōuchi clan (大内氏, Ōuchi-shi) was one of the most powerful and important families in Western Japan during the reign of the Ashikaga shogunate in the 12th to 14th centuries. Their domains, ruled from the castle town of Yamaguchi, comprised six provinces at their height, and the Ōuchi played a major role in supporting the Ashikaga in the Nanboku-cho Wars against the Imperial Court. The Ōuchi remained powerful up until the 1550s, when they were eclipsed by their vassals, the Mōri clan.

In this Japanese name, the surname is Ōuchi.
Ōuchi
大内
The emblem (mon) of the Ōuchi clan
Home provinceSuō
Parent houseBaekje Royal House (according to tradition)
Tatara clan (多々良氏)
TitlesVarious
FounderŌuchi Morifusa (大内盛房)
Final rulerŌuchi Yoshinaga
Founding year12th century
Dissolution1557
Ruled until1557, Ōuchi Yoshinaga commits seppuku

History

Local legend in modern Yamaguchi City has it that the Ōuchi clan were of Korean origins, specifically descended from a prince of Baekje. The Ōuchi-shi Jitsruroku (大内氏実録),[1] a work of the historian Kondō Kiyoshi (近藤清石, 1833–1916), is one of the books which adopt this legend. However, some scholars are in dispute,[2] and even traditions are contradictory to each other.[3] Modern day members of the Ouchi clan think that there is no dispute, and they strongly identify with Baekje.[4] According to the Ō uchi Tatarashi fuch ō and the Ōuchi-shi Jitsruroku, Prince Imseong is their first ancestor.

Based in Suō Province, towards the western end of Honshū, the Ōuchi were among the primary families to be involved in foreign trade and relations, particularly with China. Following the Ōnin War (1467–1477), a strong rivalry developed between the Ōuchi and the Hosokawa family, who were then in power. The two clashed at Ningbo in 1523, and as a result the Chinese closed Ningbo to Japanese traders. After the incident, the Ōuchi ships were only allowed to trade in China in 1540 and 1549. The Ōuchi also housed the Portuguese Jesuit missionary Francis Xavier for a time in 1551.

As a result of their wealth and trading contacts, the Ōuchi gained renown in the worlds of art and culture as well. They possessed countless items of cultural and artistic significance and beauty, from Japan and China, as well as from further abroad. Particularly famous was the invitation by Ōuchi Masahiro of the famous painter Sesshū to Yamaguchi in 1486.

In 1551, the daimyō Ōuchi Yoshitaka tried to move Emperor Go-Nara and his court from war-torn Kyoto to Yamaguchi. But the Ōuchi's chief military vassals opposed this plan, fearing that imperial courtiers would displace them. This led to the Tainei-ji incident, in which Yoshitaka was forced to commit suicide.[5] Sue Harukata, the leader of the rebellion, installed Ōuchi Yoshinaga as a puppet clan chief, but Yoshinaga was actually the younger brother of long-time Ōuchi rival Ōtomo Sōrin. This ended the Ōuchi line proper.

In 1555, Mōri Motonari, another former vassal of Yoshitaka, defeated Sue Harukata in the Battle of Miyajima. Two years later, Yoshinaga committed suicide, ending the Ōuchi clan.[6]

Clan heads
  1. Ōuchi Morifusa (大内盛房)
  2. Ōuchi Hiromori (大内弘盛)
  3. Ōuchi Mitsumori (大内満盛)
  4. Ōuchi Hironari (大内弘成, ? –1244)
  5. Ōuchi Hirosada (大内弘貞, ? –1286)
  6. Ōuchi Hiroie (大内弘家, 1274?–1300)
  7. Ōuchi Shigehiro (大内重弘, ? –1320)
  8. Ōuchi Hiroyuki (大内弘幸, ? –1352)
  9. Ōuchi Hiroyo (大内弘世, 1325–1380)
  10. Ōuchi Yoshihiro (大内義弘, 1356–1400) – Led a revolt against Shogun Ashikaga Yoshimitsu.
  11. Ōuchi Moriharu (大内盛見, 1377–1431)
  12. Ōuchi Mochiyo (大内持世, 1394–1441)
  13. Ōuchi Norihiro (大内教弘, 1420–1465)
  14. Ōuchi Masahiro (大内政弘, 1446–1495) – one of Yamana Sōzen's chief generals in the Ōnin War.
  15. Ōuchi Yoshioki (大内義興, 1477–1529) – Restored the shogun Ashikaga Yoshitane to power after a fifteen-year absence in 1508.
  16. Ōuchi Yoshitaka (大内義隆, 1507–1551) – The lord who oversaw the height of Ōuchi power and saw it end abruptly.
  17. Ōuchi Yoshinaga (大内義長, 1532?–1557) – The last Ōuchi lord, he was the son of Sengoku daimyō, Ōtomo Yoshiaki, and thus not of Ōuchi blood.

Notable retainers

Prominent castles

Notes
  1. 近藤清石（Kondō Kiyoshi） (1885). 大内氏実録 (Ōuchi-shi Jitsruroku ).（National Diet Library）
  2. Zhang 2016, p. 74.
  3. 下松市史 通史編 (in Japanese). Kudamatsu. 1989. pp. 112–113.
  4. KBS 역사추적 – 1,400년 만의 귀향, 오우치가의 비밀 / KBS 2009.6.8 방송, retrieved 2023-01-11
  5. Conlan, Thomas (2015). "The Failed Attempt to Move the Emperor to Yamaguchi and the Fall of the Ōuchi". Japanese Studies. 35 (2): 194. doi:10.1080/10371397.2015.1077679. S2CID 143369274. Retrieved 6 March 2016.
  6. "大内義長（読み）おおうち よしながデジタル版 日本人名大辞典+Plus「大内義長」の解説". kotobank. Retrieved 21 October 2021.

References
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