Masasue ANDO was originally from a branch family, Shiokata Ando family, but he came to be a captive of the Nanbu clan around the time when the Shimonokuni family had to withdrew from Ezogashima Islands, and soon he was enfeoffed Tanabe (Mutsu City), the Nanbu Navy's home base, and called himself 'Andota.'
安東政季は分家の潮潟安藤家出身であったが、下国家の蝦夷島撤退のころ南部氏の捕虜となり、まもなく南部水軍の根拠地であった田名部（むつ市）を知行し「安東太」を称した。