The relationship of bushidan and range of power of Sagami Province was described in detail from the disturbance in Obamikuriya estate to the Battle of Ishibashiyama Mountain by looking at the matrimonial relation of kaihatsu-ryoshu prior to the mobilization call by Yoritomo in "Soga Monogatari" (the tale of Soga) (Manabon - a book written only in Chinese characters) despite being just literature.
物語ではあるが、『曽我物語』（真字本：まなぼん）に見る頼朝挙兵前の開発領主の姻戚関係を見ると、大庭御厨の濫妨から、石橋山の合戦までの相模近辺の武士団の関係、勢力範囲がよく表されている。