Based on these historical materials, it is thought that the Ando clan was appointed to the administrator of Ezo (Ezosata daikan [local governor]) as a hikan (bureaucrat) (Miuchibito) of the head family of Hojo clan (Tokuso [the patrimonial head of the main branch of the Hojo clan]), which had an extensive territory in Mutsu Province from the mid-Kamakura period, and then through the Hojo clan, the Ando clan came to be controlled under the Kanamura bakufu (Japanese feudal government headed by a shogun).
これらの史料から安東氏は、鎌倉中期頃から陸奥に広範囲の所領を有した北条氏宗家（得宗）の被官（御内人）として蝦夷の統括者（蝦夷沙汰代官職）に任ぜられ、北条氏を通じて鎌倉幕府の支配下に組み込まれていったものと考えられている。