- Birth: 1835
- Death: 1893
- Titles: Higo no kami
- Childhood name: Keinosuke
- Other names: Masane Reishin (Shinto name)
- Japanese: 松平 容保 (Matsudaira Katamori)
While in Kyoto, he used the Shinsengumi to maintain public peace.
The Battle of Aizu
Katamori left Kyoto during the Battle of Toba-Fushimi with Shogun Yoshinobu and returned to Aizu in february. Pro-Emperor troops defeated the Bakufu troops in Ueno (the Battle of Ueno) and headed to north in May. The han in northern provinces allied together to against the Pro-Emperor troops which were mainly Satsuma han and Choshu han. However some han went over to the Pro-Emperor side and most han surrendered before Aizu fell.