The name of the 'Kogetsusho' comes from a story where Murasaki Shikibu paid a visit to the Ishiyama-dera Temple one day and she started to write this story from the chapter of Suma after watching the moon over Lake Biwa.
「湖月抄」の名前は紫式部が石山寺に参詣して琵琶湖に浮かぶ月を見て須磨の巻から書き始めたという伝承に由来する。