Daimyo Matsudaira Tadayori, a distinguished vassal of the Tokugawa clan, was born in 1582, the same year Oda Nobunaga was assassinated, and met his demise in a dispute following a tea ceremony in Edo in 1609.
During the pivotal Battle of Sekigahara in 1600, Tadayori was entrusted with safeguarding the Tokugawa and Matsudaira ancestral home, Okazaki Castle in Mikawa (Aichi Prefecture). Post-battle, he was granted the command of Inuyama Castle (Aichi Pref.) and Kaneyama Castle in Mino (Gifu Pref.). Subsequently, his uncle, Matsudaira Iehiro, passed away, and Tadayori inherited his uncle's estates and a stipend of 15,000 koku at Musashi-Matsuyama (northern Tokyo, Saitama Pref.) later that year.
At the age of 20, Tokugawa Ieyasu doubled Tadayori's income in 1602, and he was reassigned to the strategically important Hamamatsu Castle with a stipend of 50,000 koku. Tadayori's wife hailed from the Oda clan (Nagamasu Yuraku), a younger sibling of Oda Nobunaga, and the couple had six children.
While fulfilling his duties in Sankin Kotai, the mandatory alternate attendance at the Shogun's court, Tadayori attended a tea ceremony at the residence of Mizuno Tadatane, a cousin of Tokugawa Ieyasu and the head of the Mizuno clan in Mikawa (Aichi Pref.), on October 26, 1609. Other notable attendees included the feudal police chief Hatamoto, Kume Saheiji, and Hattori Hanhachiro.
Following the tea ceremony, the gathering transitioned to sake drinking and a game of Japanese chess known as Go. Amidst a dispute over a winning move between Mizuno and Hattori, tempers escalated, leading to drawn swords. In the attempt to quell the altercation, Matsudaira Tadayori lost his life at the age of 27. His final resting place is at Seigan-ji Temple in Fuchu, western Tokyo.
Subsequently, both Hattori and Mizuno were ordered to commit seppuku over the incident, which occurred a month later.
See also
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Okubo Tadanori
Okubo Tadanori (January 13, 1842 – August 10, 1897) was the 9th daimyo of Odawara Domain in Sagami Province (modern-day Kanagawa Prefecture) during the late Edo period. Before the Meiji Restoration, he held the courtesy title of Kaga no Kami.
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Okubo Tadayo
Okubo Tadayo (1532 – October 28, 1594) was a samurai general who served Tokugawa Ieyasu during the Azuchi–Momoyama period and later became the daimyo of Odawara Domain in the early Edo period.
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Araki Murashige
Araki Murashige (1535 – June 20, 1586) was a samurai and retainer of Ikeda Katsumasa, the head of the powerful Settsu-Ikeda clan in Settsu Province. Initially serving under Katsumasa, he aligned himself with Oda Nobunaga after Nobunaga’s successful campaign to establish control over Kyoto.
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Yuki Hideyasu
Yuki Hideyasu (March 1, 1574 – June 2, 1607) was a Japanese samurai who lived during the Azuchi–Momoyama and early Edo periods, serving as the daimyō of Fukui Domain in Echizen Province. Born Tokugawa Ogimaru, he was the second son of Tokugawa Ieyasu and Lady Oman (also known as Lady Kogō), a handmaiden to Ieyasu’s wife, Lady Tsukiyama. Due to Ieyasu’s fears of his wife’s reaction to Oman’s pregnancy, Ogimaru and his twin brother were born in secrecy at the home of Honda Shigetsugu, one of Ieyasu’s retainers. Oman’s other son eventually became a priest, while Ogimaru was raised apart from Ieyasu, whom he only met at the age of three, in a meeting arranged by his older half-brother, Matsudaira Nobuyasu.
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Tsutsui Sadatsugu
Tsutsui Sadatsugu (June 6, 1562 – April 2, 1615) was a prominent figure in the Sengoku and early Edo periods, known as the cousin and adopted heir of Tsutsui Junkei, the feudal lord of Yamato Province. Following Junkei's death in 1584, Toyotomi Hideyoshi relocated Sadatsugu to Iga Province, where he oversaw the construction of Iga Ueno Castle, marking the height of his prominence.
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Matsudaira Kiyoyasu
Matsudaira Kiyoyasu (September 28, 1511 – November 29, 1535) served as the 7th lord of the Matsudaira clan during Japan's tumultuous Sengoku period. Renowned as the paternal grandfather of Tokugawa Ieyasu, one of Japan's "great unifiers," Kiyoyasu expanded his clan’s influence, bringing all of northern Mikawa Province under his control after subduing the Saigo clan. His power was further symbolized by the construction of Okazaki Castle, a testament to the Matsudaira’s growing dominance.
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Matsudaira Hirotada
Matsudaira Hirotada (June 9, 1526 – April 3, 1549) was a daimyo and lord of Okazaki Castle in Mikawa Province during Japan’s turbulent Sengoku Period. He is best known as the father of Tokugawa Ieyasu, the founder of the Tokugawa shogunate.
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Ikeda Tsuneoki
Ikeda Tsuneoki (1536 – May 18, 1584), also known as Ikeda Nobuteru, was a prominent daimyo of the Ikeda clan and a distinguished military commander during Japan's Sengoku and Azuchi-Momoyama periods. He served under the influential warlords Oda Nobunaga and Toyotomi Hideyoshi. Tsuneoki’s connection to Nobunaga began early, as his mother, Yotokuin, was Nobunaga’s wet nurse and later became a concubine to Oda Nobuhide, Nobunaga's father.