Taira no Kiyomori

was a military leader and kugyō of the late Heian period of Japan. He established the first samurai-dominated administrative government in the history of Japan. Early life Kiyomori was born in Heian-kyō, Japan, in 1118 as the first son of Taira no Tadamori, who was the head of the Taira clan. It has been speculated that Kiyomori was actually an illegitimate son of Emperor Shirakawa. His mother, Gion no Nyogo, was a palace servant according to The Tale of the Heike. Career After the death of his father in 1153, Kiyomori assumed control of the Taira clan and ambitiously entered the political realm in which he had previously only held a minor post. Before that though, in 1156, he and Minamoto no Yoshitomo, head of the Minamoto clan, suppressed the rebels in the Hōgen Rebellion. This established the Taira and Minamoto as the top samurai clans in Kyoto. However, this caused the allies to become bitter rivals which culminated four years later during the Heiji Rebellion in 1160. Kiyomori, emerging victorious with Yoshitomo (whose two eldest sons were killed), was now the head of the single most powerful warrior clan in Kyoto. However, his clan's power and influence in the provinces at this time is a matter of debate. Kiyomori showed mercy and exiled a few of Yoshitomo's surviving sons, including Yoritomo, Noriyori, and Yoshitsune – a benevolence that would turn out to be the Taira clan's downfall later on. Due to his status as the head of the sole remaining warrior clan, Kiyomori was in a unique position to manipulate the court rivalry between the retired emperor, Go-Shirakawa, and his son, Emperor Nijō. Because of this manipulation, Kiyomori was able to climb the ranks of government, though the majority of his promotions as well as the success of his family in gaining ranks and titles at court was due to Shirakawa's patronage. This culminated in 1167, when Kiyomori became the first courtier of a warrior family to be appointed daijō-daijin, chief minister of the government, and the de facto administrator of the imperial government. As was the norm, he soon relinquished the position and leadership of the Taira clan, with the goal of maintaining the social and political prestige of having attained the highest office in the land, but being free of the attendant duties.