Minamoto no Yukiie

Who They Were

Minamoto no Yukiie (源行家, みなもと ゆきいえ) was a samurai commander of the Minamoto forces during the Genpei War, the late-Heian-period conflict between the Minamoto and Taira clans. He was born in 1145, during the first year of the Kyūan era (久安), and died on June 1, 1186. His father was Minamoto no Tameyoshi, making Yukiie a brother of Minamoto no Yoshitomo, the head of the clan's main line. His mother was a daughter of Suzuki Shigetada, a local warrior from the eastern provinces.

Yukiie held the office of Governor of Bizen Province at one point in his career, a post that placed him among the provincial aristocracy. He is recorded as having at least two children: a daughter, known simply as Minamoto no Yukiie's daughter (源行家女), and a son, Minamoto no Mitsuie.

Life and Career

Yukiie's military record in the Genpei War was marked by early defeats. In 1181, he commanded Minamoto forces against Taira no Shigehira at the Battle of Sunomatagawa and was routed. Fleeing the field, he reached the Yahagigawa bridge and attempted to destroy it to slow the Taira pursuit. The Taira caught up with him there, and in the ensuing Battle of Yahagigawa his forces were destroyed. The pursuit ended only because the Taira commander, Taira no Tomomori, fell ill and called off the chase.

Despite these losses, Yukiie survived to join his cousin Minamoto no Yoshinaka in besieging the capital in the summer of 1183. The pressure forced Taira no Munemori to flee the city, taking the young Emperor Antoku with him. The cloistered Emperor Go-Shirakawa, however, remained in the capital and came under Yoshinaka's control.

For a time, Yukiie conspired with Yoshinaka against Minamoto no Yoritomo, the clan's head and Yoshitomo's son. The plot soured when Yoshinaka proposed kidnapping the cloistered Emperor Go-Shirakawa. Yukiie refused to go along and betrayed the plan to Go-Shirakawa, who in turn passed the information to Yoritomo. The betrayal fractured the alliance between Yukiie and Yoshinaka.

In the final phase of the war, Yukiie allied himself with Minamoto no Yoshitsune, acting under imperial orders from Go-Shirakawa, against Yoritomo. This placed him on the losing side of the internal Minamoto power struggle. In 1186, Yukiie was captured and killed on Yoritomo's orders.

Why They Matter

Yukiie's significance lies less in his battlefield record than in the shifting loyalties that defined the end of the Heian period. He fought the Taira, lost, regrouped, and helped drive them from the capital. He then turned against his own cousin Yoshinaka when Yoshinaka's ambitions threatened the imperial institution, and he finished his life opposing Yoritomo, the man who would go on to found the Kamakura shogunate.

His participation in the Battles of Muroyama and Shioyama, both recorded among his engagements, places him in the thick of the war's major campaigns. His career illustrates how the Genpei War was not simply a two-sided struggle between Minamoto and Taira, but a conflict in which Minamoto fought Minamoto and alliances shifted with imperial favour.

The Name in Japanese

The name is written 源行家 in kanji.

• Kana reading: みなもと ゆきいえ
• Romaji: Minamoto no Yukiie

The surname 源 (Minamoto) breaks down as:

• 源 — reading in this name: みなもと (minamoto) — meaning "source" or "origin." This is the kanji for the Minamoto clan, one of the great noble lineages descended from imperial blood.

The given name 行家 breaks down as:

• 行 — reading in this name: ゆき (yuki) — meaning "to go" or "to proceed." The character carries the sense of travel, movement, or conduct.
• 家 — reading in this name: いえ (ie) — meaning "house" or "family." It denotes a household, lineage, or the home itself.

The particle の (no), which appears in the romanised form but not in the kanji, is the possessive or attributive particle. In classical and modern Japanese, it links the clan name to the given name, functioning much like "of" in English. Thus Minamoto no Yukiie reads literally as "Yukiie of the Minamoto."

Legacy

Yukiie's death in 1186, on the orders of Yoritomo, removed one of the last senior Minamoto commanders who had opposed the future shogun. His son Minamoto no Mitsuie carried the line forward, and his daughter is recorded in the sources as a figure of note in her own right, though the details of her life are not preserved in the historical record.

His betrayal of Yoshinaka's kidnapping plot is the act for which he is most remembered. It positioned him as a defender of the imperial institution at a moment when the cloistered emperor's authority was under direct threat from within the Minamoto camp. In the broader narrative of the Genpei War, Yukiie stands as a cautionary figure: a commander whose loyalties shifted with circumstance, and whose final allegiance to Yoshitsune placed him on the wrong side of the war's last great purge.