Oda Nobukatsu, a Daimyo and esteemed warrior, was born as the second son of Oda Nobunaga in Ko’ori Castle, situated in Niwa-Gun, presently known as Konan City of Aichi Prefecture, in the year 1558.
In 1570, following a brief conflict between the Oda and the Kitabatake clan of Ise Province (Mie Prefecture), Nobukatsu was adopted as the heir of the Kitabatake clan to restore peace. He married the daughter of Kitabatake Tomonori, but soon after the wedding, he orchestrated a series of ruthless actions. This included the murder of his father-in-law, the elimination of several key Kitabatake supporters, the imprisonment of the former Lord of Ise, and the complete usurpation of control for himself. Subsequently, Nobukatsu launched an unsuccessful invasion of neighboring Iga Province (also in Mie Prefecture). In response to his failure, Nobukatsu faced the wrath of his father, Nobunaga, and to preserve his authority, he was compelled to annihilate the entire region, including Iga and the remaining Kitabatake clan, along with their prestigious residences and Kiriyama Castle.
The 1582 coup known as the Honno-ji Incident resulted in the deaths of Nobukatsu's father and elder brother, Nobutada, sparking a dispute over succession between the two surviving brothers. Despite being born 20 days prior to Nobukatsu, Nobutaka, whose mother was a concubine, was considered younger due to Nobukatsu's noble-born mother. The brothers contended for their father’s legacy until the Kiyosu Kaigi, a meeting held at Kiyosu Castle, where Toyotomi Hideyoshi and other chief retainers of Nobunaga decided to nominate Nobutada’s infant son, Samboshi (later Oda Hidenobu), as the rightful heir.
Subsequently, Nobukatsu reclaimed his Oda lineage, relinquishing the Kitabatake name, and was appointed Lord of Mino (Gifu), Owari (Aichi), and Ise (Mie) provinces. Fearing his brother Nobutaka's growing influence, Nobukatsu allied with Toyotomi Hideyoshi to eliminate him, leading to Nobutaka's forced seppuku in mid-late June 1583. However, Nobukatsu later clashed with Hideyoshi over authority, prompting him to seek support from Tokugawa Ieyasu to overthrow Hideyoshi, culminating in the Battle of Komaki Nagakute in 1584. Despite initial hostilities, Nobukatsu eventually accepted Hideyoshi's peace offering, aligning himself with Hideyoshi and relinquishing his allegiance to Ieyasu.
Nobukatsu remained loyal to Hideyoshi, serving at the Siege of Odawara in 1590. However, he refused to surrender his domains when Hideyoshi redistributed his retainers' holdings, resulting in his forced retirement as a monk. Despite this, he was later pardoned and granted lands. Following Hideyoshi's death, Nobukatsu was entrusted with the guardianship of Hideyoshi’s infant son and heir, Hideyori, at Osaka Castle. However, in 1614, he betrayed the Toyotomi clan, surrendering to Tokugawa Ieyasu during the Winter Siege of Osaka. As a reward for his betrayal, he was granted the Uda-Matsuyama Domain in Yamato Province (Nara Prefecture), where he resided until his demise in 1630.
See also
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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.
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Nambu Nobunao
The Nambu clan was an ancient and powerful family that traced its lineage back to the Minamoto shoguns and had controlled a significant part of the Tohoku region in northern Honshu since the 12th century. Nobunao was born in Ikatai Castle, located in what is now the city of Iwate. He was the second son of Ishikawa (Nambu) Takanobu, the 22nd head of the Nambu clan. In 1565, Nobunao’s uncle, Nambu Harumasa, adopted him, brought him to Sannohe Castle, and named him his heir, later giving his daughter in marriage to him.
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Naito Ienaga
Ienaga was the son of Naitō Kiyonaga and served Tokugawa Ieyasu from an early age. Like his father, he was exceptionally brave, and thanks to his remarkable skill with the bow, he earned the nickname “the unrivaled archer.” Although both the elder and the younger Naitō belonged to the Jōdo Shinshū (“True Pure Land”) sect, during the Ikkō-ikki uprising in Mikawa Province in 1565, Ienaga did not support his fellow believers and instead sided with Tokugawa Ieyasu, earning his special trust. He later took part in the battles of Mikatagahara, Nagashino, and many other engagements while accompanying Ieyasu.
