The theory to point out the possibility that the Ando family had been already settled in Akita Country before the supposed time of the Minato family's establishment, based on such findings; the family's history can be dated back even earlier period than the time of Magogoro ANDO and Andota, both of whom are confirmed as the territorial lords of the Oga Peninsula, and also earlier than the time of the legendary Kanosue's Nansen (provincial capital's relocation to the south), about which Jakuzo, Tadasue ABE, Joso ABE, etc. described in the copy of Jisha shuzo munefuda (ridge tag with history of the reparation and construction of temples and shrines) compiled in 'Ichikawa Minato Monjo' (The letter of Ichikawa Minato), and that there is an oral tradition in which a family called the Onagawa family was the territorial lord of the Oga Peninsula before the Minato family.
男鹿半島の領主として確認される安藤孫五郎、安東太の両者や、「市川湊文書」に含まれている寺社修造棟札写に残る寂蔵、安倍忠季、安倍浄宗等が鹿季の南遷と伝えられている時代以前に遡れること、湊家以前の男鹿半島の領主を女川家と伝える伝承があること等から、湊家の成立と伝えられる以前に安東一族が秋田郡に土着していた可能性を指摘する見解