Matsudaira Katamori
After purge of Chōshū Domain by Aizu Domain and Satsuma Domain (The coup of 18 August) and Kinmon Incident, Matsudaira Shungaku returned to Kyoto in 1867 as a member of the "Sanyo Kagi ("参預会議), a short-lived consultative assembly consisting of Tokugawa Yoshinobu, Shimazu Hisamitsu, Date Munenari, Matsudaira Katamori and Yamauchi Yōdō. This congress was aimed at diminishing the power of the Shogunate and establishing a council system of government by the Imperial Court with select major domains. Meetings were held eight times at Shungaku's residence, and discussions were held on opening of Hyogo (Kobe) Port to other nations and on how to respond to the threat posed by Chōshū Domain. The system didn't function well because of conflicts between then members, especially the personal enmity between Shimazu Hisamitsu and Tokugawa Yoshinobu. On 22 March 1864 Shungaku replaced Matsudaira Katamori as Military Commissioner of Kyoto, but he resigned on 7 April.