In 1185, MINAMOTO no Yoritomo, in response to OE no Hiromoto's suggestion, instituted a countrywide system of shugo (governors) and jito (estate stewards) with the goal of hunting down his younger brother, MINAMOTO no Yoshitsune.
1185年に、源頼朝は大江広元の献策を容れて弟の源義経の追討を目的に全国に守護・地頭を設置する。