Born into the Ko clan that served the Ashikaga. His birth year is unclear; some later traditions place it around 1299, but accounts differ. His father was Moroshige. Raised near Takauji, he learned administration and strategy.
In the Genko War he followed Ashikaga Takauji and joined in toppling the Kamakura bakufu. Under the Kenmu regime he served on boards such as the zasso ketsudansho as Takauji's deputy. In the chaos his role as the lord's right hand grew fast.
When Takauji turned against the Kenmu regime after the Nakasendai Rebellion, Moronao led troops and won merit in fighting around Kyoto and Kyushu. He became a key figure backing Takauji's path to the shogunate through military practice.
He fought and defeated Kitabatake Akiie, a famed Southern Court general. Victory in the Kinai secured the bakufu's edge and raised Moronao's fame. The Taiheiki paints him as a new warrior who slighted old authority, shaping later tales.
When Takauji became shogun, Moronao became steward of the shogunal house. He held the practice of rewards and directives; many orders to warriors went through him. With his brother Moroyasu he backed the new bakufu in war and government.
As steward he handled warriors reward petitions and conveyed the shogun will by directive. Linking war and government was essential to founding the Muromachi bakufu.
In Kawachi at Shijonawate he defeated Kusunoki Masatsura, son of Masashige, who fell in battle. The blow to the Southern Court showed him as chief of bakufu arms. Yet his rise deepened conflict with Tadayoshi, who held civil rule.
He clashed hard with Takauji's brother Tadayoshi, who ran civil affairs. Moronao besieged Tadayoshi's mansion, forced him to take vows and leave office, and returned as steward with real power. It was the start of a split in the bakufu.
Tadayoshi fled Kyoto, joined the Southern Court, and the Kannō Disturbance began against Takauji and Moronao. Former allies fought; the Kinai fell into chaos. Moronao fought with Takauji against Tadayoshi's side, but the tide turned against them.
At Uchidehama in Settsu, Takauji and Moronao were defeated; Moronao took vows and surrendered. On the way to Kyoto, near the Muko River, Uesugi Yoshinori and other Tadayoshi men attacked; Moronao died with Moroyasu and much of his clan. His age at death is unknown.
Ashikaga YoshiakiraAshikaga TakaujiAshikaga TadayoshiKitabatake Chikafusa
Emperor Go-DaigoKitabatake ChikafusaKusunoki MasashigeSasaki DōyoNitta YoshisadaAshikaga TakaujiAshikaga TadayoshiNijō Yoshimoto
People of the Muromachi period ・ People by period
Based on facts found in textbooks and biographies. Uncertain points are marked as such.