Uesugi Kagekatsu was born into the Nagao clan of Ueda, the son of Nagao Masakage. After Masakage's death, Kagekatsu was adopted by his uncle, Uesugi Kenshin, as his mother, Aya Gozen, was Kenshin’s elder sister. When Kenshin passed away suddenly in 1578, Kagekatsu found himself entangled in a power struggle with his stepbrother/cousin, Uesugi Kagetora, also adopted by Kenshin.
On March 17, 1578, Kagekatsu besieged Kagetora’s castle at Otate, resulting in its swift fall and Kagetora's forced seppuku. With this victory, Kagekatsu asserted his full inheritance and leadership over the Uesugi clan.
Aligned with the Toyotomi clan, Kagekatsu participated in military campaigns at Odawara and in both Korean Campaigns. His loyalty and competence earned him Aizu Domain and an income of 1.2 million koku. Highly esteemed by Hideyoshi, Kagekatsu was appointed as one of the Council of Five Elders.
Following Hideyoshi’s death in 1598, Kagekatsu observed as Tokugawa Ieyasu, another councilor, moved to divide the council members and the nation into East and West factions. Kagekatsu was among the first daimyo to oppose Ieyasu's actions, remaining loyal to the Toyotomi clan and supporting Ishida Mitsunari against the Tokugawa.
Kagekatsu's fortification of a castle at Aizu and the mobilization of troops drew the attention of Ieyasu, who marshaled a formidable force of 50,000 soldiers against the Uesugi. This move was likely part of Ishida Mitsunari's strategy to divert Ieyasu's attention from the Western loyalists. However, Ieyasu sensed the ploy and redirected his forces towards Sekigahara.
After the Western forces' defeat at Sekigahara, Kagekatsu aligned himself with the Tokugawa. He was granted the domain of Yonezawa with an income of 300,000 koku. Kagekatsu fought for the Tokugawa in the Osaka campaigns of 1614 and 1615.
Uesugi Kagekatsu passed away on April 19, 1623, in Yonezawa at the age of 67.
See also
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Takeda Nobuyoshi
Takeda Nobuyoshi (1128–1186 or later) was a prominent Japanese samurai lord of the late Heian and early Kamakura periods and the founder of the Takeda clan.
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Tokugawa Iemochi
Tokugawa Iemochi (1846–1866) was the fourteenth shōgun of the Tokugawa shogunate and ruled from 1858 until his death. His reign came during the turbulent final years of the shogunate, when Japan faced growing Western pressure and serious internal political conflict.
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Tokugawa Ienari
Tokugawa Ienari (1773–1841) was the eleventh shōgun of the Tokugawa shogunate and ruled from 1787 to 1837, making him the longest-serving Tokugawa shōgun. He was a great-grandson of the eighth shōgun, Tokugawa Yoshimune.
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Matsudaira Nobuyasu
Matsudaira Nobuyasu was only twenty years old when his father ordered him to commit seppuku. The reason was not a defeat in battle, but a crisis inside the Tokugawa family that had become too dangerous to ignore.
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Yamagata Masakage
Masakage was one of Takeda Shingen’s most loyal and capable commanders. He was included in the famous list of the “Twenty-Four Generals of Takeda Shingen” and also belonged to the inner circle of four especially trusted warlords known as the Shitennō.
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Yagyu Munenori
Yagyū Munenori began his service under Tokugawa Ieyasu while his father, Yagyū Muneyoshi, was still at his side. In 1600, Munenori took part in the decisive Battle of Sekigahara. As early as 1601, he was appointed a kenjutsu instructor to Tokugawa Hidetada, Ieyasu’s son, who later became the second shogun of the Tokugawa clan.
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Yagyu Muneyoshi
A samurai from Yamato Province, he was born into a family that had been defeated in its struggle against the Tsutsui clan. Muneyoshi first took part in battle at the age of sixteen. Due to circumstances beyond his control, he was forced to enter the service of the Tsutsui house and later served Miyoshi Tōkei. He subsequently came under the command of Matsunaga Hisahide and in time became a vassal first of Oda and later of Toyotomi.
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Endo Naozune
Naozune served under Azai Nagamasa and was one of the clan’s leading vassals, renowned for his bravery and determination. He accompanied Nagamasa during his first meeting with Oda Nobunaga and at that time asked for permission to kill Nobunaga, fearing him as an extremely dangerous man; however, Nagamasa did not grant this request.
