In the last days of the Tokugawa Shogunate, Tamekazu SAWA and his son, Nobuyoshi SAWA actively worked as vanguards of the sonnojoi ha (supporters of the doctrine of restoring the emperor and expelling the barbarians).
幕末には澤為量・澤宣嘉父子が勤皇攘夷派の急先鋒として活躍。