 The last "kubō" had to escape to Koga, in today's Ibaraki prefecture, and he and his descendants thereafter became known as the "Koga kubō".According to the Shinpen Kamakurashi, a guide book published in 1685, more than two centuries later the spot where the "kubō"s mansion had been was still left empty by local peasants in the hope he may one day return.A long period of chaos and war followed the departure of the last "Kantō kubō" (the Sengoku period).