While it had been said since ancient times that Jien was the author, research has revealed that it was not Jichin (also known as Jien) but a Tendai sect priest Sogetsubo Keisei who was the grandchild of Jien's older brother.
作者について古来慈円と言われてきたが、慈鎮でなく彼の兄の孫である天台僧証月房慶政であることが研究によって明らかになった。