The family line of Yoshitsura SAHARA of the Miura clan, as well as the Chiba clan, can tell the details of this time period, and if we assume that such family traditions were captured in "Azuma Kagami," everything can be consistent.
この期間を詳細に後世に伝えられる家としては千葉氏を筆頭に、あとは三浦氏の佐原義連の家系であり、それらの家に伝えられた伝承が『吾妻鏡』に取り込まれたと仮定すれば全ては符合する。