The Kiyohara Family was a family of scribes, the business of which was to write notes to Chinese, and the Seike Library, which is now housed at Kyoto University, was once owned by the Kiyohara Family.
清原家は漢文の注釈などを家業にする文章の家で、現在京都大学に所蔵されている清家文庫はかつてこの清原家が所持していたものである。