According to "Kirei Mondo" (a book published in the late Heian period), besides working as a shirabyoshi dancer herself, Iso no Zenji was also engaged in the business of sending out dancers to the residences of nobles in Kyoto.
自身も白拍子であり、『貴嶺問答』によると京の貴族の屋敷に白拍子の派遣などを行っていた。