Minamoto no Yoritomo was a SAMURAI who lived in the Heian era.
He is the first samurai who established the shogunate which is the government of samurais apart from the Imperial Court.
The shogunate was located at Kamakura in Japan, so it was called "Kamakura Bakuhu".
It was 1192.(According to another view, it's said in 1185)
He was defeated by Taira no Kiyomori at the battle in his boyhood, and then he was exiled to the land of Izu.
However he made a comeback, and waged battle against the Taira clan, and won in the end.
He is known by establishing the shogunate, on the other hand he is also known as a cruel SAMURAI, because he even killed his brother Yoshitsune to protect his position.