Minamoto no Yoshihira
His mother was the daughter of Miura no Yoshiaki, thus indicating the close ties between the two families. His brothers were Minamoto no Yoshitsune, Noriyori and Yoritomo. He married the daughter of Minamoto no Yoshishige.
Then, in 1159, Yoshihira was sent to Kyoto to fight in the Heiji Rebellion. The Taira offered to make a peace agreement, but the Minamoto refused, and were soon defeated. Although Yoshihira fled the battle, and lived peacefully, in disguise, for a time in Kyoto, he was soon captured and killed by Taira no Kiyomori, the head of the enemy faction.
- The majority of this article is simply a translation from the Japanese Wikipedia article.