TV-Series
Description
Born in 1147, Minamoto no Yoritomo was the third son of Minamoto clan head Yoshitomo, tracing his lineage to Emperor Seiwa and blending aristocratic and military heritage. Captured after his father's defeat and death in the 1159 Heiji Rebellion against the Taira, Yoritomo endured exile in Izu province under Taira surveillance for twenty years.

During this exile, he forged a pivotal alliance by seducing and marrying Hojo Masako, daughter of Taira vassal Hojo Tokimasa. This marriage secured the political protection and resources vital for challenging Taira dominance. Answering Prince Mochihito's call to arms in 1180, Yoritomo ignited the Genpei War. He rallied eastern provinces and discontented Taira members by exploiting dissatisfaction with Taira no Kiyomori's authoritarian rule. Establishing his military headquarters in Kamakura, he created governance structures like the Samurai-dokoro to centralize control over Minamoto vassals.

Yoritomo demonstrated strategic political acumen throughout the conflict. He delegated military campaigns to his younger half-brother Yoshitsune, achieving decisive victories at Kurikara (1183) and Dan-no-ura (1185), ending Taira supremacy. Yet he grew suspicious of Yoshitsune's popularity and successes. When Emperor Go-Shirakawa granted Yoshitsune imperial authority, Yoritomo accused him of treachery, expelled him from the clan, and ordered his death. He ruthlessly eliminated other rivals, including his cousin Yoshinaka after Yoshinaka seized Kyoto in 1183.

Following the Taira defeat, Yoritomo systematically expanded administrative control. He implemented nationwide the shugo and jito systems, transferring provincial governance from imperial aristocracy to his samurai vassals. After Retired Emperor Go-Shirakawa's death in 1192, he secured the title of Seii Taishogun, formalizing the Kamakura shogunate as Japan's first hereditary military dictatorship. His later years involved suppressing remaining opposition, notably the 1189 campaign against the Fujiwara in the north. He died in 1199, leaving the shogunate under the regency of his wife Hojo Masako.