warrior who shaped the Minamoto clan into an awesome fighting force that was feared and respected throughout Japan. Later generations of Minamotos worshipped Yoshiie as an almost divine ancestor.

The son of Minamoto Yoriyoshi, Yoshiie aided his father in the battles known as the Earlier Nine Years' War (1051–62), which ultimately resulted in the defeat of the Abe clan and the ascendancy of the Minamotos in northern Japan. Yoshiie's military prowess so awed his enemies that they called him Hachiman-Tarō, “the firstborn of the God of War.”

Twenty years after this war, the Kiyowara family, which had aided the Minamoto family in the Earlier Nine Years' War, began to challenge Minamoto rule in northern Japan. In a series of battles lasting from 1083 to 1087, Yoshiie's reputation for ferocity in battle was not diminished. He eliminated the Kiyowaras and established the absolute sovereignty of the Minamotos in the north. Unlike the Earlier Nine Years' War, however, this conflict was fought without any commission from the court and was evidence of the Minamotos' growing independence. These later battles are collectively known as the Later Three Years' War, three years being the time of the actual fighting, not counting the pauses.