Ōkubo Tadataka
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Ōkubo Tadataka (大久保忠教?) or Ōkubo Hikozaemon (- 彦左衛門) (1560 – April 2, 1639) was a Japanese warrior in the Sengoku and Edo periods. He was the eighth son of Ōkubo Tadakazu, a vassal of the Tokugawa clan. Tadataka wrote the Mikawa Monogatari, a work he wrote for his descendants, telling the way a warrior should live, mixed with a chronicle of the accomplishments of the Tokugawa and Ōkubo clans.
Born in Mikawa Province, Tadataka accompanied his older brother Tadayo to battle in the subjugation of Totomi Province, fighting for the first time at age 17 at Inui Castle. He also fought at Takatenjin, Ueda, the Siege of Odawara, and Sekigahara. Tokugawa Ieyasu awarded him a fief of 3,000 koku. He returned to battle at the Siege of Osaka, and later served the second and third Tokugawa shoguns.
Tadataka died at age 80. His graves are in Okazaki, Kyoto, and Tokyo.
