After the implementation of the ritsuryō system, the central gōzoku became kizoku, the aristocracy, and took part in central politics. The regional gōzoku remained practically unchanged and took part in regional politics.[2] Under the ritsuryō system, gōzoku referred to powerful regional families holding a court rank of Sixth Rank or below or who were unranked, in contrast to the royals and the aristocracy, who held a court rank of Fifth Rank or above. Under this system, the gōzoku typically served as district governors or as junior officials in provincial governments, and thus took on the duties of local administration.[1]
In the Middle Ages, gōzoku referred to a class of regional officials such as jitō (territory governor), shōkan (manor administrator) and geshi (junior official at a manor). However, after Muromachi period, the term gōzoku fell out of use and was replaced by the term dogō, which referred to jizamurai (provincial peasant-warrior in charge of a small rural domain), kumon (official at a manor in charge of official documents) and satanin (official at a manor in charge of executing orders and judgements on behalf of the lord).[1]
During and after the Edo period, neither the terms gōzoku nor dogō were used. The terms gōnō and gōshō replaced the previous class distinction following the rise of wealthy farmers and wealthy merchants during the Edo period.[1]
