However Fumihiko GOMI considers that history books which deserve to be called "The original Azuma Kagami," like 'A Record of Shogun Yoritomo,' were completed in their original form around 1235, and around the same time, "The Original Tale of the Heike," and in the eastern provinces, "The Original Tale of Soga" could also be said to have been written.
ただし五味文彦は、それ以前の1235年頃に、「頼朝将軍記」とかの『原吾妻鏡』と呼べるような歴史書が原型として出来上がり、同じころに京都では『原平家物語』が著され、また東国では『原曽我物語』がつくられたということもあり得るのではないかとする。