warrior whose military and diplomatic skills made the Taira clan the most powerful family in Japan and laid the groundwork for his son Kiyomori's assumption of virtual control over the country.

After the death of his father, Masamori, who had established the family along the Inland Sea in western Japan, Tadamori helped the Imperial court by subduing the pirates menacing navigation. In so doing, he gained many retainers for his clan and new titles and grants from the Imperial government, which was pleased that trade with China again flourished. Tadamori also shared in the lucrative China trade, and he further enhanced his position by consistently supporting the court against the challenges of rival clans, particularly the Minamotos.

Unlike his provincial rivals, who were bedazzled by the magnificence of the capital, Tadamori was highly cultivated and schooled in classical learning. As the Emperor's personal bodyguard and confidant, he was accepted as an equal by the court aristocracy. Thus, he elevated the influence of the Taira clan, giving its members a psychological advantage over their warrior rivals.