Toda Hachirōzaemon (戸田八郎左衛門), personal name Tadamichi (戸田忠道), was born in Bunka 10 (1813), the second son of the hatamoto Toda Tadayasu (戸田忠養), lord of Takatsuka village in Atsumi district, Mikawa province. In Tenpō 15 (1844) he became the adopted heir of his elder brother and succeeded to the headship of the house. He trained in Tamiya-ryū (田宮流) under Kubota Kiyooto (窪田清音), whose Kubota-ha he represented.
Promoted within the Kōbusho, he rose to kenjutsu shihan-yaku in Man’en 1 (1860) and to Kōbusho bugyō (奉行; commissioner) in Bunkyū 1 (1861). A second Toda — Toda Tadaaki (戸田忠昭) — is recorded as a Kōbusho kenjutsu kyōjukata from the same Kubota circle, so the Toda name appears twice in the institute’s kenjutsu staff.
Tamiya-ryū
Tamiya-ryū (田宮流) is an iaijutsu / battōjutsu tradition (居合術 / 抜刀術; the art of drawing and cutting from the scabbard) founded roughly four centuries ago by Tamiya Heibei Narimasa (田宮平兵衛業正), a direct student of Hayashizaki Jinsuke Shigenobu (林崎甚助重信), the figure conventionally regarded as the progenitor of iai. Carried into the Kishū Tokugawa house, the line was praised as “the Tamiya of beauty, the Tamiya of poise” (美の田宮, 位の田宮), language that points to its emphasis on refined, composed form rather than overt aggression. The branch directly relevant to the Kōbusho is the Kubota-ha Tamiya-ryū (窪田派田宮流) of the hatamoto Kubota Kiyooto (窪田清音), who demonstrated Tamiya-ryū iai before Shōgun Tokugawa Ieyoshi in Tenpō 12 (1841) and, when the Kōbusho opened, became a tōdori alongside Odani Seiichirō. Kubota was the senior figure of the contemporary martial world — credited with thousands of students in military science and hundreds in the martial arts, and with some 130 specialist works — and his instruction was noted for an unusual stress on shissō (疾走; sprinting / rapid movement), so that the swordsman could deliver full power under any condition.
A Tamiya-ryū iaijutsu line survives today, transmitted in the Tsumaki (妻木) family and associated with the Kishū / Tamiya Shinken-ryū tradition; the school is represented within the Nihon Kobudō Kyōkai, and the international Tamiya-ryū organizations maintain English-language material.
