As for Shihato Sanjin of the above, 'Shihato' was one of the eight Go (an administrative area larger than a village) in Hazu County and was also read as 'Shihatsu,' which changed its meaning to the origin of the place name of Hazu, and 'Sanjin' used as a suffix to pseudonyms was added to it.
このうちの磯泊散人について、「磯泊（しはと）」とは和名類聚抄にある幡豆郡八郷うちの一つで「しはつ」とも読み、転じて幡豆の語源ともいわれる地名であり、それに号に添えて用いる語の「散人」を合わせたものである。