After Shinzaemon took over the Nagai clan, his son Norihide NAGAI (later, Dosan SAITO), succeeded to his position and the family name of the Saito clan, referring to himself as Toshimasa SAITO.
新左衛門尉は長井氏を乗っ取り、次いで新左衛門尉の跡を継いだその子長井規秀（後の斎藤道三）が斎藤家の名跡を継ぎ、斎藤利政を名乗った。