From this point in history, all shogun that headed shogunates were by tradition descendants of the Minamoto princes, the sons of emperor Seiwa, and the title passed generation to generation to the eldest sons.
PrinceMoriyoshi (also known as Prince Morinaga), son of Emperor Go-Daigo was awarded the title of Seii Taishogun and put in charge of the military.
After Ashikaga Takauji, later founder of the Muromachi shogunate, rebelled against the emperor, PrinceMoriyoshi was put under house arrest and killed in 1335 by Takauji's younger brother Ashikaga Tadayoshi.
Emperor Go-Daigo's ideal was the Engi era (901-923) during the reign of Emperor Daigo, a period of direct imperial rule.
Go-Daigo escaped from the capital, the Sacred Treasures that he had handed over to the Ashikaga being counterfeit, and set up the Southern Court among the mountains of Yoshino, beginning the Period of Northern and Southern Courts in which the Northern Dynasty in Kyōto and the Southern Dynasty in Yoshino faced off against each other.
Emperor Go-Daigo ordered Imperial Prince Kaneyoshi to Kyūshū and Nitta Yoshisada and Imperial Prince Tsuneyoshi to Hokuriku, and so forth, dispatching his sons all over, so that they could oppose the Northern Court.