Echigo Saburô was a son of Matsumoto Ryozo. He joined the Shinsengumi as a spy from Choshu han. He attempted to kill Nagakura Shinpachi and Nakamura Kingo but failed and deserted next day.
References
- Shinsengumi - Honor and Determination of the Mibu Rôshi (血誠新撰組-峻烈壬生浪士忠と斬), Rekishi Gunzô series #31, Gakken, Japan, 2003