Saigō Tanomo was a Japanese samurai of the late Edo period. Chief senior councilor of the Aizu clan, he achieved fame due to his distinguished action in the Boshin War. He adopted the name Hoshina Chikanori. Surviving the war, he became a Shinto priest, and achieved renown as a martial artist. He is considered as one of the teachers of the famed Takeda Sōkaku.
Succeeding to family headship and the position of chief senior councilor in 1860, he served the 9th generation Aizu daimyō, Matsudaira Katamori. However, with Katamori's selection for the post of Kyoto Shugoshoku in 1862, his views sharply diverged with those of his lord. Wanting to warn Katamori of the dangers of Aizu's deeper political involvement in the troubled Tokugawa regime, he and his fellow karōTanaka Tosa rode nonstop from Aizu to Edo and spoke directly to Katamori. The lord, while understanding Tanomo's views as well as the domain's financial situation, nevertheless could not disobey what was both a direct shogunal order as well as part of the greater scheme put together by his colleagues, and so he dismissed Tanomo. Tanomo thus spent the following six years in Aizu, informally dismissed from his position.
Boshin War
In 1868, with the rout at the Battle of Toba–Fushimi, and with Katamori back in Aizu for the first time in years, Tanomo's services were again called upon. While he recommended submission to the Imperial Army early in 1868, the arrival in Aizu of former Bakufu soldiers forced Aizu's hand in the direction of continued military action. Once again, Tanomo's voice was drowned out. During the Battle of Aizu, Tanomo fought in defense of the castle town of Aizu-Wakamatsu, the women of Tanomo's family are still famous in the region for having committedmass suicide. Just before the surrender, Tanomo escaped Aizu and headed for Sendai. Joining Enomoto Takeaki and Hijikata Toshizō there, he continued on to Hokkaidō, where he joined in the military efforts of the Ezo Republic, but was defeated together with its forces in 1869.
Later life
After spending a few years in prison, Tanomo was released in 1872, and subsequently opened up a private academy in the Izu region. In 1889, he was chosen as one of the head priests of Tōshō-gū Shrine in Nikkō, where he served alongside his former lord Matsudaira Katamori, and Katamori's brother Matsudaira Sadaaki. In his later years, Tanomo also taught Takeda Sōkaku, the teacher of Ueshiba Morihei. Retiring in 1899, Tanomo returned to Aizu, where he died in 1903 at the age of 74. The book Seiun-ki, written shortly before Tanomo's death, records his memoirs.
