what role did he play in the feudal system?

Minamoto has a Japanese warrior and dictator, founder of the Kamakura shogunate. After a long struggle he led his clan, the Minamoto, to victory over the Taira in 1185. He became the first shogun, established his bakufu at Kamakura, and rewarded his retainers with estates strategically located throughout the country. These fiefs later became the basis of the power of the daimyo. Aided by scholars drawn from the imperial court, which minamoto controlled, he set up an secretarial network that soon became the only effective central government. His shogunate marked the beginning of a strong time in Japanese history. Zen Buddhism was officially sponsored, and the military virtues of bushido were educated. Minaotos system of centralized feudalism set the pattern of military rule in Japan.