Ōkubo Tadachika

In this Japanese name, the family name is Ōkubo.
Ōkubo Tadachika
Daimyo of Odawara Domain
In office
Preceded by Ōkubo Tadayo
Succeeded by Abe Masatsugu
Personal details
Born c. 1553
Okazaki, Feudal Japan
Died July 28, 1628 (aged 7475)
Edo, Japan
Nationality Japanese

Ōkubo Tadachika (大久保 忠隣, 1553 July 28, 1628) was daimyō of Odawara Domain in Sagami Province in early Edo period, Japan.

Ōkubo Tadachika was the son of Ōkubo Tadayo, a hereditary vassal to the Tokugawa clan in what is now part of the city of Okazaki, Aichi. He entered into service as a samurai from age 11, and took his first head in battle at the age of 16. He served in most of the campaigns of his father, including the Battle of Anegawa (1570), Battle of Mikatagahara (1573), Battle of Nagashino (1575), Battle of Komaki and Nagakute (1584), and Battle of Odawara (1590). He came to be regarded as one of Ieyasu's most experienced and trusted advisors, along with Honda Masanobu. In 1593, he was assigned the post of Karō to Tokugawa Hidetada. Upon the death of his father in 1594, he became head of the Ōkubo clan, and daimyō of Odawara Domain, whose revenues were raised to 65,000 koku. During the Battle of Sekigahara, his forces accompanied those of Tokugawa Hidetada along the Nakasendō, and were late in arriving at the battle due to resistance by Sanada Masayuki at Ueda Castle in Shinano Province. In 1610, after the foundation of the Tokugawa shogunate, he became a rōjū. This was a period of great political intrigue, as Tokugawa Ieyasu had retired to Sunpu, but continued to manipulate politics from behind-the-scenes, much to the growing discontent of Hidedata and his retainers. Ōkubo Tadachika fell afoul of the shogunate in what was later termed the Ōkubo Nagayasu Incident of 1614. His domain was confiscated, and he was reassigned to a small 5,000 koku hatamoto holding in Omi Province. Shortly afterwards, he retired from public life, became a Buddhist monk by the name of Keian Dōhaku (渓庵道白).

Preceded by
Ōkubo Tadayo
Daimyo of Odawara
Succeeded by
Abe Masatsugu


Further reading

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