Also, because there were very few records of Emperor Gofukakusa's romances before "Towazugatari" was found, some scholars used to think that the descriptions of his romances in "Masukagami" were fictional or had been confused with those of his brother Emperor Kameyama, but after the discovery of "Towazugatari," it was confirmed that there was a basis for the descriptions in "Masukagami."
また、『とはずがたり』発見以前には後深草天皇の女性関係に関する記録が乏しく、『増鏡』における同天皇の女性関係の記述を創作あるいは弟の亀山天皇のものとの誤認説を唱える学者もいたが、この書の発見以後『増鏡』の記述に根拠がある事が確認された。