Kanezane described in his diary "Gyokuyo" an article about the friendship between Nobunori and Kanezane (in the sections of the end of May in the first year of the Joan era and December 15 and 16 in the third year of the Jisho era, etc.).
兼実の日記『玉葉』には信範と兼実の親交の記事が登場する（承安元年5月末日・治承3年12月15・16日条他）。