[official] Kokushi lost their power during the Kamakura Shogunate and furthermore during the Muromachi Shogunate to the Shugo. In subsequent generations, especially in the Edo period, a kokushi title remained as an honorific title. ...
Found on
http://en.wikipedia.org/wiki/Kokushi_(official)

(from the article `Japan`) ...division: the kuni, or koku (province), the kri, or gun (county), and the sato, or ri (village), to be administered by officials known as kokushi, ...
Found on
http://www.britannica.com/eb/a-z/k/44
No exact match found.