In the "Sanetaka Koki" (Sanetaka's Diary), designated a national important cultural property, it is written that Motonobu was in possession of a copy of the "Ise Monogatari" (The Tales of Ise) written by FUJIWARA no Sadaie himself.
国の重要文化財に指定された『実隆公記』には、元信が藤原定家自筆の『伊勢物語』を所持していたことが記されている。