In the "Azuma Kagami," eight cases out of nine in which Yorimori is referred to mention his name in respect of his relationship with Yoritomo (the only reference to Yorimori alone, is in an entry for May 16 in the fourth year of the Jisho era recounting his taking the child of Mochihitoo), and it appears as if Yorimori was used as material to depict Yoritomo's benevolence.
『吾妻鏡』では頼盛の名が出る9例中、8例までが頼朝との関連で言及されているので（頼盛単独では、治承4年5月16日条の以仁王の子を連行した記事のみ）、頼朝の恩情を語るための素材になっている感がある。