His mother was the daughter of Miura Yoshiaki, thus indicating the close ties between the two families.
He married the daughter of Minamoto no Yoshishige, Shojuhime.
[1]: 114 Then, in 1160, 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.
Yoshihira succeeded to flee, then attempted to avenge his father by killing a Taira leader by coming back secretly to Kyoto, but he was betrayed, soon captured and decapitated by Taira no Kiyomori, the head of the enemy faction.