Minamoto Samurai Estate System

Timeline

1. 1180–1185Kantō and Kinai · JapanIn 1180 Minamoto no Yoritomo raised forces at Kamakura; during the Genpei War of 1180–1185, Minamoto clan members and samurai from Kantō, Kai, Shinano, and elsewhere mobilized and fought in units of estate and retainer band.
2. 1185–1192Kamakura · KantōAfter the Battle of Dan-no-ura in 1185 the Minamoto destroyed the Taira; Yoritomo was appointed seii taishōgun in 1192, establishing a warrior government at Kamakura and bringing Minamoto gokenin under shogunal rule.
3. 1185–1221All of Japan · JapanThe shogunate invested gokenin through the on-gi and hō-kō relationship; after 1185 it progressively appointed shugo and jitō to manage estates and conduct land surveys, incorporating the local samurai estate system into a central military-administrative framework.
4. 1203–1333Kamakura · KantōAfter Hōjō Yasutoki established the regency in 1203, Minamoto shoguns remained but real power passed to the Hōjō; the gokenin system continued until the fall of the Kamakura shogunate in 1333.