
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.
Born as the fifth son of Matsudaira Yorihiro, daimyo of Takamatsu Domain in Sanuki Province, Tadanori was a nephew of Tokugawa Nariaki and thus a cousin of Shogun Tokugawa Yoshinobu. Following the death of Okubo Tadanao in 1859, he was adopted into the Okubo clan, becoming its 11th head and assuming the position of daimyo of Odawara Domain. He served in several important roles within the Tokugawa shogunate, including Soshaban (Master of Ceremonies) in November 1863. In 1864, he accompanied Shogun Tokugawa Iemochi on his visit to Kyoto. Briefly, from September to December 1867, he held the post of Kofu Jodai (Castellan of Kofu).
During the Boshin War of the Meiji Restoration, Tadanori initially allowed the pro-Imperial forces of the Satcho Alliance to cross the Hakone Pass unopposed. However, in May 1868, he met with Hayashi Tadataka and other pro-Tokugawa resistance leaders, signaling his willingness to support their cause. When Edo fell to the Imperial forces, he changed sides again and attempted to plead his case before the leaders of the Satcho Alliance. Perceived as a traitor, he was ordered to retire from public life, and his titles were transferred to Okubo Tadayoshi, daimyo of Ogino-Yamanaka Domain, a cadet branch of the Okubo clan.
Tadanori was later reinstated as head of the Okubo clan in July 1875, following Tadayoshi’s retirement. In 1884, with the establishment of the kazoku peerage system, he was granted the title of viscount (shishaku). He passed away on August 10, 1897, and was laid to rest at the clan’s temple, Saisho-ji, in Setagaya, Tokyo.
See also
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Hatano Hideharu

Hatano Hideharu was the eldest son of Hatano Harumichi, the head of the Hatano clan. However, in childhood he was adopted by his uncle, Hatano Motohide, and was therefore formally regarded as Motohide’s heir. From the time of Hideharu’s grandfather, Hatano Tanemichi, the Hatano clan had been a vassal of the powerful Miyoshi house, which exerted considerable influence over the Ashikaga shoguns and effectively shaped the political situation in the region. Early in his career, Hideharu served Miyoshi Nagayoshi and, judging by surviving records, held a fairly high position within his lord’s hierarchy, as he was among the select group invited to the enthronement ceremony of Emperor Ōgimachi in 1557.
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Fukushima Masanori

Fukushima Masanori, a samurai from Owari Province, served Toyotomi Hideyoshi and took part in the Battle of Shizugatake, where he distinguished himself so conspicuously that he was awarded the honorary title of one of the “Seven Spears of Shizugatake,” meaning the warriors who had shown the greatest valor in the battle. As a reward for his courage and martial prowess, he was granted land producing an income of 5,000 koku of rice.
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Uemura Masakatsu

Masakatsu was a member of the Uemura clan and the son of Uemura Masatada; from an early age he served Tokugawa Ieyasu. During the Ikkō-ikki uprising in Mikawa Province in 1563, having converted from the Jōdo Shinshū Buddhist sect to the Jōdoshū sect, he took part in suppressing the rebels. After these events, Masakatsu was appointed a military governor and was granted land holdings. According to a number of sources, he was one of the so-called “Three Governors of Mikawa” (Mikawa sanbugyō), together with Amano Yasukage (1537–1613) and Koriki Kiyonaga (1530–1608).
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Tomoe Gozen

Gozen is regarded as one of the few historically documented examples of true female warriors of feudal Japan, known as onna-musha or onna-bugeisha. Although Japanese history records countless women who at various times were forced to take up arms—for example, in defense of their castles—Tomoe Gozen was, without any doubt, a genuinely skilled and accomplished fighter. She was the wife of Kiso (Minamoto) Yoshinaka, although The Tale of the Heike describes her more as a female vassal. Yoshinaka rose in rebellion against the Taira clan and, in 1184, captured Kyoto after his victory at the Battle of Kurikawa. After the Taira were driven into the western provinces, Yoshinaka began insistently asserting that he alone was worthy of assuming leadership of the Minamoto clan and taking on the mantle of its head.
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Tachibana Muneshige

Tachibana Muneshige was born the eldest son of Takahashi Shigetane, one of the principal retainers of the Ōtomo clan and commander of Iwaya Castle. In childhood, he bore the name Senkumamaru. His early years coincided with a period of intense military confrontation between the Ōtomo clan and other powerful warrior houses of Kyūshū—namely the Shimazu, Akizuki, and Ryūzōji clans.
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Tachibana Dosetsu

Tachibana Dōsetsu is the name by which Hetsugi Akitsura is more widely known; the name of this lineage is also found read as Hekki or Bekki. For a long period, Akitsura served the Ōtomo clan, the daimyō of Bungo Province, and took part in wars against the Ōuchi family, the principal enemies of the Ōtomo in northwestern Kyushu. In the 1560s, Akitsura seized the castle of the Tachibana clan, which had rebelled against the Ōtomo, and thereafter adopted the surname Tachibana. Around the same time, he took Buddhist vows and assumed the name Dōsetsu, which means “Snowy Road.”
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Taira no Masakado

Taira no Masakado embodied the quintessential samurai of his era—self-assured, harsh, and unyielding. In his youth, he served in the palace guard and repeatedly proved his bravery while suppressing unrest. Thanks to these achievements, Masakado sought the post of chief of the capital’s military-police office (the kebiishi-chō), but he was rejected: by that time, nearly all court positions—now little more than privileged sinecures—were controlled by members of the powerful Fujiwara clan.
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Sakakibara Yasumasa

Yasumasa was the second son of Sakakibara Nagamasa and was born in Ueno in Mikawa Province. From a young age, he began serving Tokugawa Ieyasu and eventually rose to the position of one of his most trusted generals. His wife was the daughter of Osuga Yasutaka. Ieyasu first noticed the young Yasumasa during the suppression of the Ikkō-ikki uprising in Mikawa in 1564. Thanks to his demonstrated abilities, Yasumasa was granted the privilege of using the character “yasu”—the second character of Ieyasu’s own name—in his own. Although he was the second child in his family, he became his father’s heir, though the exact reasons for this remain unknown.
