Kitabatake Chikafusa

was a Japanese court noble and writer of the 14th century who supported the Southern Court in the Nanboku-cho period, serving as advisor to five Emperors. Some of his greatest and most famous work was performed during the reign of Emperor Go-Daigo, under whom he proposed a series of reforms, amounting to a revival or restoration of political and economic systems of several centuries earlier. In addition to authoring a history of Japan and a number of works defending the right of Go-Daigo's line to the throne, Kitabatake fought in defense of the Southern Court as a member of the Murakami branch of the Minamoto clan. Provided by Wikipedia