Ashikaga Yoshinori (July 12, 1394 – July 12, 1441) assumed the role of the sixth shogun of the Ashikaga shogunate, governing from 1429 to 1441 during Japan's Muromachi period. Born as the son of the third shogun, Ashikaga Yoshimitsu, he was known as Harutora in his youth.
Following the passing of the fifth shogun, Ashikaga Yoshikazu, in 1425, the fourth shogun, Ashikaga Yoshimochi, resumed leadership of the shogunate. Yoshimochi, having no other sons and having not designated a successor before his own demise in 1428, left the future of the shogunate uncertain.
Upon Yoshimochi's passing, Yoshinori, who had embraced monastic life at the age of ten, assumed the role of Sei-i Taishogun. His appointment was orchestrated by the shogunal deputy, Hatakeyama Mitsuie, who, within the sanctum of Iwashimizu Hachiman Shrine in Kyoto, selected Yoshinori from a pool of potential Ashikaga successors. It was believed that the influence of Hachiman played a role in this auspicious decision.
Yoshinori officially took the mantle of shogun in 1429, a year prior to the Southern Court's surrender. However, his reign was marked by several uprisings, including the Otomo rebellion and the insurrection of rebel monks on Mount Hiei in 1433. Additionally, the Eikyo Rebellion, led by Kanto kubo Ashikaga Mochiuji, transpired in 1438. In the same year, Yoshinori consolidated the authority of the shogunate by quelling Ashikaga Mochiuji, who took his own life the following year due to growing dissatisfaction with Yoshinori's rule.
During this era, there was heightened contact with China, and Zen Buddhism gained influence, resulting in broad cultural ramifications. For instance, the main hall (Hon-do) at Ikkyu-ji stands today as the oldest extant Tang-style temple in the Yamashiro and Yamato provinces, constructed in 1434 and dedicated by Yoshinori.
Several significant events occurred during Yoshinori's reign: the establishment of the Tosen bugyo in 1434 to oversee foreign affairs; the destruction of the Yasaka Pagoda at Hokanji in Kyoto by fire in 1436, followed by its reconstruction four years later under Yoshinori's patronage; and in 1441, Yoshinori granted the Shimazu clan suzerainty over the Ryūkyū Islands.
In 1432, trade and diplomatic relations between Japan and China were reinstated, a connection that had been severed during Yoshimochi's rule. The Chinese emperor reached out to Japan by sending a missive to the shogunate via the Ryūkyū Islands, to which Yoshinori responded favorably.
Yoshinori's reign also witnessed the establishment of the Tosen-bugyo system in 1434 to mediate overseas trade. This body's functions encompassed safeguarding trading ships in Japanese waters, procuring export goods, mediating between the Muromachi shogunate and shipping interests, and maintaining record-keeping. Notably, the Muromachi shogunate was the first to appoint members of the samurai class to high-ranking positions in its diplomatic bureaucracy.
Yoshinori's rule, however, was marred by his oppressive measures and unpredictable autocratic tendencies. In 1441, he met his demise at the hands of Akamatsu Noriyasu, the son of Akamatsu Mitsusuke, who had invited Yoshinori to a Noh performance at their residence and assassinated him during the evening play. Yoshinori was 48 years old at the time of his assassination. Mitsusuke orchestrated the plot after learning of Yoshinori's intention to bestow three provinces, belonging to Mitsusuke, upon his cousin Akamatsu Sadamura. This decision was influenced by the fact that Sadamura's younger sister had become Yoshinori's concubine and had borne him a son.
In the aftermath, it was decided that Yoshinori's 8-year-old son, Yoshikatsu, would succeed as the new shogun. Mitsusuke had already clashed with the fifth Shogun Ashikaga Yoshimochi in 1427, leading to Mitsusuke's relocation to Harima province and the burning of his residence in Kyoto. This act further escalated tensions with Yoshimochi, resulting in a deadly pursuit.
While the Ashikaga line persisted through this seventh shogun, the authority of the shoguns gradually waned, leading to the eventual decline of the shogunate. The events surrounding Yoshinori's assassination and betrayal represented a departure from the previous code of military loyalty.
See also
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Ouchi Yoshihiro
Ōuchi Yoshihiro was the second son of Ōuchi Hiroyo, who headed the Ōuchi clan in the western part of Honshu. In 1363, Shogun Ashikaga Yoshimitsu confirmed the Ōuchi family in the position of shugo of Suō and Nagato Provinces. In his youth, Yoshihiro assisted his father in strengthening the influence of the Northern Court on the island of Kyushu — they served under Imagawa Ryōsun, who had been tasked with subjugating the nine provinces of Kyushu.
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Ouchi Yoshioki
Ouchi Yoshioki, the ruler of the provinces of Suo, Nagato, and Iwami, was one of the most capable military commanders and politicians of the late 15th and early 16th centuries. The son of Ouchi Masahiro, he governed from his residence in Yamaguchi in the province of Suo. In 1499, Yoshioki gave refuge to Shogun Ashikaga Yoshitane, who had been driven out of Kyoto by Hosokawa Masamoto. Shogun Yoshizumi, Masamoto’s protégé, ordered the lords of Kyushu to unite their forces against Yoshioki; however, they did not dare to do so, fearing the power of a man who by that time controlled six provinces. Having gathered a substantial army, Yoshioki marched from his native Suo toward Kyoto in order to restore Shogun Yoshitane to power.
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Otomo Sorin
Ōtomo Yoshishige came from a noble lineage, being the eldest son of Ōtomo Yoshiaki, the ruler of Funai Province. The roots of the Ōtomo family traced back to Fujiwara Hidesato, the adopted son of Nakahara Chikayoshi. Fujiwara served Minamoto Yoritomo during the Genpei War and took part in battles in Mutsu Province in 1189. In 1193, he was appointed shugo of Buzen and Bungo Provinces, after which he adopted a new surname—Ōtomo.
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Okudaira Sadamasa
Sadamasa was the son of Okudaira Sadayoshi and took part in several battles under Tokugawa Ieyasu, distinguishing himself in the Battle of Anegawa in 1570, where he took two heads. Around 1572 he was forced to enter the service of the Takeda clan, but after the death of Takeda Shingen in 1573 he returned to Tokugawa, leaving Tsukude Castle together with his men. As a result of this defection, Takeda Katsuyori ordered the execution of Sadamasa’s wife and brother, who were being held as hostages.
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Okubo Tadatika
Tadatika, the son of Okubo Tadayō, entered the service of Tokugawa Ieyasu at the age of eleven, and took his first head in battle when he was sixteen. After the establishment of the Tokugawa shogunate, he was appointed as a rōjū — a senior bakufu official — and was regarded as one of Ieyasu’s most trusted advisors, alongside Honda Masanobu. He is also known for his military chronicle Mikawa Monogatari, which describes Ieyasu’s rise to power and the early years of the Tokugawa shogunate.
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Okubo Nagayasu
Nagayasu was the second son of Okura Nobuyasu, a sarugaku theater actor from the Takeda clan. Takeda Shingen recognized the young man’s potential and took him into service, appointing him as a vassal to his general, Tsuchiya Masatsugu. During this period, Nagayasu changed his family name to Tsuchiya. He was entrusted with developing the Takeda clan’s gold mines as well as handling matters related to taxation.
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Nitta Yoshisada
Nitta Yoshisada was a loyal soldier of Emperor Go-Daigo, who in the 1330s attempted to restore direct imperial rule in Japan. The Nitta family was related to the Ashikaga house and was older in lineage. However, they did not join Minamoto Yoritomo at the start of his war with the Taira, as the Ashikaga did, and therefore did not receive high positions in the Kamakura shogunate. This may have been one of the reasons why Yoshisada rose against the Hōjō clan in 1333.
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Natsume Yoshinobu
Yoshinobu, a long-time vassal of the Matsudaira and Tokugawa clans, governed Hamamatsu Castle on behalf of the Tokugawa house. During the clashes between the Imagawa, Takeda, and Matsudaira clans, he served in the garrison of Nagasawa Castle and in 1562 took part in raids under the command of Itakura Shigezane. When, in 1563, a revolt of the Sōtō-shū sect followers broke out in Mikawa Province, Yoshinobu joined the rebels together with Honda Masanobu and Hachiya Sadatsugu.
