It was around 1600 when the so-doshiyori system was implemented in Imai-cho with Nagazaemon Masafuyu KAWAI (later assumed the new family name of Imanishi), Nyudo Hyobubo KAWASE (later assumed the new family name of Imai) and Genbei OZAKI initially being appointed as so-doshiyori and Chuemon UEDA subsequently joined this team at a later date.
今井町に惣年寄制がしかれたのは慶長年間（1600年頃）で初めに川井長左衞門正冬（後改め今西氏）、河瀬入道兵部房（後改め今井氏）、尾崎源兵衛、あと上田忠右衛門、を加えた。