Also, after he entered in the Shiobara's family register, he left his signature, 'Suehiro Saburaibito Seigetsu INOUE' in verbal note which was designated to help his daughter-in -law find a husband who was able to be adopted by her family.
また、塩原家に入籍後、義理の娘に婿養子を斡旋するための口上書に「末広侍人井上井月」との自署を残している。