was a samurai member of the

Minamoto clan was one of the surnames bestowed by the Emperors of Japan upon members of the imperial family who were excluded from the line of succession and demoted into the ranks of the nobility from 1192 to 1333. The practice was most prevalent during th ...

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

Genpei War The was a national civil war between the Taira and 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 Yoritomo, who appointed hi ...

. He was the adopted son of

Minamoto no Tameyoshi was head of the Minamoto clan during his lifetime, and son of Minamoto no Yoshichika, son of Minamoto no Yoshiie. He led the Minamoto in the Hōgen Rebellion. Tameyoshi is also known as . Though he was most famous for his involvement in the Hōge ...

since age thirteen.

Overview

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 Taira was one of the four most important clans that dominated Japanese politics during the Heian, Kamakura and Muromachi Periods of Japanese history – the others being the Fujiwara, the Tachibana, and the Minamoto. The clan is divi ...

. 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 province of Japan, which today comprises Shiga Prefecture. It was one of the provinces that made up the Tōsandō circuit. Its nickname is . Under the ''Engishiki'' classification system, Ōmi was ranked as one of the 13 "great countri ...

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 ...

, for aid, but stopped in

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

along his way. There, he attracted the interest of a daimyō named

Shibuya Shigekuni Shibuya (渋谷区 ''Shibuya-ku'') is a special ward in Tokyo, Japan. As a major commercial and finance center, it houses two of the busiest railway stations in the world, Shinjuku Station (southern half) and Shibuya Station. As of April 1, 2 ...

; 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 of Japan, ruling from 1192 until 1199.Nussbaum, Louis-Frédéric. (2005). "Minamoto no Yoriie" in . He was the husband of Hōjō Masako who acted as regent ('' shikken'') after h ...

, 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 was a Japanese samurai commander in the Genpei War, the great conflict between the Minamoto and Taira clans.Nussbaum, Louis Frédéric ''et al'' (2005). "Sasaki Takatsuna" in An infant at the time of the Heiji Rebellion (1159–1160), Takatsu ...

’s daughter **fifth son:

Sasaki Yoshikiyo was a samurai member of the Minamoto clan, who was the founder of Izumo-Genji clan. Background Sasaki Yoshikiyo was born the fifth son of Sasaki Hideyoshi, who was the head of the Sasaki clan of Uda-Genji (Uda-Gen clan), based in Sasaki-no ...

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.

Overview

Family

References

See also