An incident that occurred during the mid-twelfth century involving a disturbance at the Obamikuriya estate of Sagami Province and Soma-mikuriya (private estate of Soma ranch) of Shimousa Province realistically depicted the transfiguration of the Zaichokanjin being the local lord at that time, harsh conflicts between governors and mokudai (deputy provincial governor), and the fragility of the lord of the manor class.
12世紀の中葉に起こった相模国の大庭御厨の濫妨と、下総国の相馬御厨の事件は、当時における在庁官人＝在地領主の変貌と、国司・目代との対立の激しさ、在地領主層の地位の脆弱さと限界を如実に示してる。