was a samurai member of the

Minamoto clan was a Aristocracy (class), noble surname bestowed by the Emperors of Japan upon members of the Imperial House of Japan, imperial family who were excluded from the List of emperors of Japan, line of succession and demoted into the ranks of Nobili ...

, who fought in the Hōgen and Heiji Rebellions and in the

Genpei War The was a national civil war between the Taira clan, Taira and Minamoto clan, Minamoto clans during the late Heian period of Japan. It resulted in the downfall of the Taira and the establishment of the Kamakura shogunate under Minamoto no Yori ...

. He was the adopted son of

Minamoto no Tameyoshi was a Japanese samurai lord in the Heian period, who was the head of the Minamoto clan during his lifetime. He was the son of Minamoto no Yoshichika, son of Minamoto no Yoshiie. He led the Minamoto in the Hōgen Rebellion. He was also known as . ...

since age thirteen.

Life

Sasaki fought under

Minamoto no Yoshitomo (1123 – 11 February 1160) was the head of the Minamoto clan and a general of the late Heian period of Japanese history. His son Minamoto no Yoritomo became ''shōgun'' and founded the Kamakura shogunate, the first shogunate in the history o ...

in the Hōgen Rebellion (1156), aiding in the siege of the Shirakawa palace. Three years later, he fought for the Minamoto again in the Heiji Rebellion, incurring the ire of the rival

Taira clan The was one of the four most important Japanese clans, clans that dominated Japanese politics during the Heian period, Heian period of History of Japan, Japanese history – the others being the Minamoto clan, Minamoto, the Fujiwara clan, Fuji ...

. By the time of the Genpei War, the all-out civil war between the Minamoto and the Taira, Hideyoshi had lost his hereditary estate in

Ōmi Province was a Provinces of Japan, province of Japan, which today comprises Shiga Prefecture. It was one of the provinces that made up the Tōsandō Circuit (subnational entity), circuit. Its nickname is . Under the ''Engishiki'' classification system, ...

as a result of the displeasure of the Taira. He set out to appeal to his uncle,

Fujiwara no Hidehira was the third ruler of Northern Fujiwara in Mutsu Province, Japan, the grandson of Fujiwara no Kiyohira. During the Genpei War, he controlled his territory independently of the central government; however, he was the official imperial governor f ...

, for aid, but stopped in

Sagami province was a Provinces of Japan, province of Japan located in what is today the central and western Kanagawa Prefecture.Louis-Frédéric, Nussbaum, Louis-Frédéric. (2005). "''Kanagawa''" at . Sagami Province bordered the provinces of Izu Province, Izu ...

along his way. There, he attracted the interest of a daimyō named Shibuya Shigekuni; Hideyoshi married Shibuya's daughter, and became heir to that land. His sons would serve

Minamoto no Yoritomo was the founder and the first shogun of the Kamakura shogunate, ruling from 1192 until 1199, also the first ruling shogun in the history of Japan.Nussbaum, Louis-Frédéric. (2005). "Minamoto no Yoriie" in . He was the husband of Hōjō Masako ...

, the first Kamakura shōgun.

Family

*grandfather:Sasaki Tsunekata *father:Sasaki Tametoshi *Wives: **

’s daughter ** Shibuya Shigekuni's daughter ** Utsunomiya-dono *Children: **eldest son:Sasaki Sadatsuna (1142-1205) by

’s daughter **second son:Sasaki Tsunetaka (1142/1151-1221) by Utsunomiya-dono **third son:Sasaki Moritsuna (b.1151) by

’s daughter **fourth son: Sasaki Takatsuna by

’s daughter **fifth son: Sasaki Yoshikiyo by Shibuya Shigekuni's daughter **sixth son:Yoshida Gonsyu **7th son:Nōkei

References

*Papinot, Edmond (1910). Historical and geographical dictionary of Japan. Tokyo: Librarie Sansaisha. *Sansom, George (1958). 'A History of Japan to 1334'. Stanford, California: Stanford University Press.

Life

Family

References

See also