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Mōri Motonari

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Mōri Motonari was a prominent daimyō, or feudal lord, in the western Chūgoku region of Japan. He lived during the Sengoku period in the 16th century. This was a time of constant warfare between many different military leaders. Motonari belonged to the Mōri clan, which claimed descent from Ōe no Hiromoto. Hiromoto was a famous adviser to the shogun Minamoto no Yoritomo.

Imperial Seal of Japan
Imperial Seal of Japan

Motonari began his career as a small local warlord known as a jizamurai. Through a combination of military strategy, marriage, adoption, and assassination, he expanded his clan's power. He eventually controlled nearly the entire Chūgoku region.

Mori Motonari painting at Toyosaka Shrine
Mori Motonari painting at Toyosaka Shrine

Motonari was born on April 16, 1497, in Aki Province. His childhood name was Shōjumaru, and he was the second son of Mōri Hiromoto. His early years were marked by sudden changes in his family's status. In 1500, his father retired due to a power dispute and moved to Tajihi-Sarugake Castle. Shōjumaru's mother died in 1501, and his father died of alcohol poisoning in 1506. After his father's death, a vassal named Inoue Motomori embezzled land from the clan. This left the young Shōjumaru impoverished. Because of this poverty, common people called him the "Beggar Prince."

Alex K Hiroshima Mori (color)
Alex K Hiroshima Mori (color)

As a young boy, Shōjumaru was known as a fearless daredevil. One night, he and other children escaped their father's castle. They encountered the troops of the powerful lord Amago Tsunehisa. While the other children trembled in fear, Shōjumaru challenged the veteran warrior. He shot an arrow at Tsunehisa, who caught the arrow with his bare hand. Tsunehisa was so impressed by the boy's bravery that he spared the children.

Mori-Gunori
Mori-Gunori

In 1511, Shōjumaru underwent his genpuku ceremony to become an adult. He officially took the name Mōri Motonari. In 1516, his brother Okimoto died, leaving Motonari as the regent for his infant nephew, Kōmatsumaru.

The Mōri clan faced a major crisis in 1517 when Takeda Motoshige attacked. Motoshige led an army of 5,000 men to raid Mōri territory. Motonari led a smaller force of approximately 1,000 men to defend Arita Castle. This force included 300 soldiers from the Kikkawa clan. During the Battle of Arita-Nakaide, the two sides fought near the Uchikawa River. The Takeda commander, Kumagai Motonao, was killed by an arrow during the struggle. Later, Takeda Motoshige was also struck by an arrow and killed while leading his troops. This victory allowed the Mōri clan to begin its military expansion.

Yoshida-kouriyama Castle Honmaru
Yoshida-kouriyama Castle Honmaru

Motonari used diplomacy and marriage to build a network of power. In 1522, he married the daughter of Kikkawa Kunitsune. This alliance secured the friendship of the powerful Kikkawa clan. This connection helped Motonari extend his influence toward the Iwami Ginzan Silver Mine. He also navigated complex relationships with the powerful Amago and Ōuchi clans. In 1525, he changed his allegiance to the Ōuchi clan. In 1533, he received the imperial court rank of Junior Fifth, Lower Grade. This rank proved to other lords that he had the support of the imperial court.

Japanese Crest Oouchi Hisi
Japanese Crest Oouchi Hisi

Maintaining control required Motonari to face internal threats and external enemies. In 1524, he had to defeat a traitorous vassal named Katsura Hirozumi. That same year, he crushed a conspiracy led by Sakagami Sosuke. He also fought to expand his territory by crushing the Takahashi clan. This conquest was difficult, and his eldest daughter was killed by the Takahashi in revenge. Despite these hardships, Motonari continued to consolidate his holdings in Aki Province. By the end of the 1530s, he had defeated the Miya and Tagayama clans. He even turned former enemies, like the Aki-Takeda clan, into allies.

By the end of his career, Motonari was one of the most powerful men in Japan. He successfully defeated both the Amago and Ōuchi clans to control the Chūgoku region. He also crushed the Ōtomo clan of the Kyūshū region in his later years. Motonari ruled from his main stronghold, Yoshida-Kōriyama Castle.

C1570
C1570

His political success ensured that his family remained influential for generations. His descendants eventually became the lords of the Chōshū Domain. Today, his legacy is remembered through monuments at his birthplace and his tomb.

Motonari Mouri's Tombstone
Motonari Mouri's Tombstone
685 words

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🖼️ Images & Media (12)
File:Imperial Seal of Japan.svg
Imperial Seal of Japan.svg
File:Kamon yotumeyui.png
Kamon yotumeyui.png
File:Japanese Crest Oouchi Hisi.svg
Japanese Crest Oouchi Hisi.svg
File:Alex K Hiroshima Mori (color).svg
Alex K Hiroshima Mori (color).svg
File:Mori-Gunori.jpg
Mori-Gunori.jpg
File:Mori Motonari painting at Toyosaka Shrine.jpg
Mori Motonari painting at Toyosaka Shrine.jpg
File:C1570.png
C1570.png
File:Battle of Miyajima-2.jpg
Battle of Miyajima-2.jpg
File:Gassan Toda Castle Gassan.jpg
Gassan Toda Castle Gassan.jpg
File:Motonari Mouri's Tombstone.JPG
Motonari Mouri's Tombstone.JPG
File:Mori 18 Generals.jpg
Mori 18 Generals.jpg
File:Yoshida-kouriyama Castle Honmaru.JPG
Yoshida-kouriyama Castle Honmaru.JPG
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