When the period of Northern and Southern Courts began, with Chikafusa KITABATAKE being given the title of Jugo, even the vassals who were not the emperor's maternal relatives started to be given the title of Jugo.
南北朝時代(日本)に入ると、北畠親房にも与えられたのに伴い、天皇の外戚以外の臣下にも准后が宣下される道が開かれるようになった。