Wikipedia
Samurai-dokoro
The Samurai-dokoro (侍所 - Board of Retainers) was an office of the Kamakura and Muromachi shogunates. It was established in 1180 by the Kamakura Shogunate, when Minamoto no Yoritomo appointed Wada Tarō Yoshimori its president on the 17th day of the eleventh month in the fourth year of Jishō (1180). The role of the Samurai-dokoro was to guard the shogunate and give judgment on criminals in peacetime, and to take the leadership of gokenin in wartime.