Yasuo MOTOKI, a professor in the Graduate School of Kyoto University, proposed that the reason why war merito of Yukitsuna TADA is not in "Azuma Kagami" is his territories were seized because Yoritomo became angry with him after the fall of the Heike (Taira clan) family (in 1185).
元木泰雄京都大学大学院教授は、多田行綱の戦功が『吾妻鏡』にない理由は、平氏滅亡後の文治元年（1185年）に行綱が頼朝の怒りを受けて所領を没収されたためであろうと述べている。