吾妻鏡
Sources do not always agree. Kugyō is for example described as wearing either woman's clothes (in the "Azuma Kagami") or his monastic uniform. It is often said that he was hiding behind the great ginkgo tree, but the "Azuma Kagami" simply says he came . The detail of the ginkgo first appears in the "Shinpen Kamakurashi", and is therefore considered an Edo period invention.