Prince Mochihito
Prince Mochihito
Catalyst of the Minamoto Uprising
1151-1180 · 享年 29歳
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Three Surprising Facts
One Decree That Changed History — The Trigger of the Genpei War
In April 1180, Prince Mochihito conspired with Minamoto no Yorimasa and issued a decree (ryoji)—an imperial command—to Minamoto warriors and samurai throughout the country: "Overthrow the Taira." This triggered Yoritomo (in Izu), Yoshinaka (in Shinano), and others to rise in rapid succession, igniting the Genpei War. Mochihito himself died in battle about a month after issuing the decree, but that single document set off the great turning point in Japanese history that led to the founding of the Kamakura Shogunate.
Battle of Byodo-in at Uji — A Prince Who Took Up the Bow and Died at 30
After raising arms, the fleeing Mochihito—pursued by Taira forces—attempted to cross the Uji River while heading for Nara. In fighting near Byodo-in at Uji, Minamoto no Yorimasa committed suicide. Mochihito continued to flee alone but was struck by a stray arrow near Komyosanji and fell dead from his horse. He was 30. His brief life ended there, but the very fact that "a member of the imperial family had armed himself and fought the Taira" continued to lend legitimacy to all later anti-shogunate movements.
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Full Biography
From birth to death
Third son of Emperor Go-Shirakawa. Brilliant and gifted in poetry, he was a strong candidate for the throne but was blocked by Taira no Kiyomori's political interference. In April 1180, unable to endure Taira tyranny, he issued a decree (ryōji) with Minamoto no Yorimasa calling on all Minamoto warriors to overthrow the Taira. This decree triggered uprisings by Yoritomo, Yoshinaka, and others, igniting the Genpei War. However, Mochihito himself was killed on May 26, struck by a stray arrow near Kōmyōsanji while fleeing toward Nara after a battle near Byōdō-in in Uji. He was 30. Though his uprising lasted barely a month, his decree fundamentally changed the course of Japanese history.
Personality
A prince of great intellect and refinement, tragically denied the throne by the Taira. In the end, he showed courage by taking up arms himself.
Historical Significance
Mochihito's decree is one of the greatest turning points in medieval Japanese history. Without it, the Genpei War would not have occurred and the Kamakura shogunate would never have been established. He stands as a rare prince who took up arms.
Family Tree
Parents
Father
1127-1192
Emperor Go-Shirakawa
The ruling retired emperor who played Taira and Minamoto against each other.
Self
Prince Mochihito
1151-1180
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