On the other hand, the Shimonokuni family, which ruled Tsugaru Province, was forced out by the Nanbu clan, which was proceeding from the eastern area, to expand its influence.
一方、津軽を領した下国家は15世紀半ば頃、東の八戸市方面から勢力を伸ばしてきた南部氏に追われた。