| Surname: | Minamoto |
| Surname Nihongo: | 源氏 |
| Image Size: | 200px |
| Image Caption: | The emblem (mon) of the Minamoto clan (three Japanese gentian flowers on five bamboo leaves) |
| Home Province: | Heian-kyō (Modern Kyōto) |
| Parent House: | Imperial House of Japan (Emperor Saga) |
| Titles: | Shogun, Daimyō, Kuge, Daijō-daijin, Sadaijin, Udaijin, Kazoku, and others |
| Founder: | Minamoto no Makoto (first recorded) |
| Founding Year: | May 814 (years ago) |
| Ruled Until: | still extant |
was a noble surname 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 since 814.[1] [2] Several noble lines were bestowed the surname, the most notable of which was the Seiwa Genji, whose descendants established the Kamakura and Ashikaga shogunates following the Heian era. The Minamoto was one of the four great clans that dominated Japanese politics during the Heian period in Japanese history—the other three were the Fujiwara, the Taira, and the Tachibana.[3] [4]
In the late Heian period, Minamoto rivalry with the Taira culminated in the Genpei War (1180-1185 AD). The Minamoto emerged victorious and established Japan's first shogunate in Kamakura under Minamoto no Yoritomo, who appointed himself as Shōgun in 1192, ushering in the Kamakura period (1192–1333 AD) of Japanese history. The name "Genpei" comes from alternate readings of the kanji "Minamoto" (源 Gen) and "Taira" (平 Hei).
The Kamakura Shogunate was overthrown by Emperor Go-Daigo in the Kenmu Restoration of 1333. Three years later the Kenmu government would then itself be overthrown by the Ashikaga clan, descendants of the Seiwa Genji who established the Ashikaga shogunate (1333 to 1573).
The Minamoto clan is also called the, or less frequently, the, using the On'yomi readings of for "Minamoto", while means "clan", and is used as a suffix for "extended family".[5]
The Emperors of Japan bestowed noble surnames upon members of the imperial family who were excluded from the line of succession and demoted into the ranks of the nobility. In May 814, the first emperor to grant the surname "Minamoto" was Emperor Saga, to his seventh son—Minamoto no Makoto, in Heian-Kyō (modern Kyōto).[6] [7] The practice was most prevalent during the Heian period (794–1185 AD), although its last occurrence was during the Sengoku period. The Taira were another such offshoot of the imperial dynasty, making both clans distant relatives.[8] The most prominent of the several Minamoto families, the Seiwa Genji, descended from Minamoto no Tsunemoto (897–961), a grandson of Emperor Seiwa. Tsunemoto went to the provinces and became the founder of a major warrior dynasty. Minamoto no Mitsunaka (912–997) formed an alliance with the Fujiwara. Thereafter the Fujiwara frequently called upon the Minamoto to restore order in the capital, Heian-Kyō (modern Kyōto).Mitsunaka's eldest son, Minamoto no Yorimitsu (948–1021), became the protégé of Fujiwara no Michinaga; another son, Minamoto no Yorinobu (968–1048) suppressed the rebellion of Taira no Tadatsune in 1032. Yorinobu's son, Minamoto no Yoriyoshi (988–1075), and grandson, Minamoto no Yoshiie (1039–1106), pacified most of northeastern Japan between 1051 and 1087.[9] The Seiwa Genji's fortunes declined in the Hōgen Rebellion (1156), when the Taira executed most of the line, including Minamoto no Tameyoshi. During the Heiji Disturbance (1160), the head of the Seiwa Genji, Minamoto no Yoshitomo, died in battle.[9] Taira no Kiyomori seized power in Kyoto by forging an alliance with the retired emperors Go-Shirakawa and Toba and infiltrating the kuge. He sent Minamoto no Yoritomo (1147–1199), the third son of Minamoto no Yoshimoto of the Seiwa Genji, into exile. In 1180, during the Genpei War, Yoritomo mounted a full-scale rebellion against the Taira rule, culminating in the destruction of the Taira and the subjugation of eastern Japan within five years. In 1192, he received the title shōgun and set up the first bakufu in the history of Japan at Kamakura—Kamakura shogunate.[9] The later Ashikaga (founders of the Ashikaga shogunate of Muromachi period), Nitta, Takeda, and Tokugawa (founders of the Tokugawa shogunate of Edo period) clans claim descents from the Minamoto clan (Seiwa Genji branch).[10] [11]
The protagonist of the classical Japanese novel The Tale of Genji (The Tale of Minamoto clan)—Hikaru Genji, was bestowed the name Minamoto for political reasons by his father the emperor and was delegated to civilian life and a career as an imperial officer.
The Genpei War is also the subject of the early Japanese epic The Tale of the Heike (Heike Monogatari).[12]
Even within royalty there was a distinction between princes with the title, who could ascend to the throne, and princes with the title, who were not members of the line of imperial succession but nevertheless remained members of the royal class (and therefore outranked members of Minamoto clans). The bestowing of the Minamoto name on a (theretofore-)prince or his descendants excluded them from the royal class altogether, thereby operating as a reduction in legal and social rank even for ō-princes not previously in the line of succession.Many later clans were formed by members of the Minamoto clan, and in many early cases, progenitors of these clans are known by either family name. There are also known monks of Minamoto descent; these are often noted in genealogies but did not carry the clan name (in favour of a dharma name).The Minamoto is the ancestor and parent clan of many notable descendant clans, some of which are Ashikaga, Tokugawa, Matsudaira, Nitta, Takeda, Shimazu, Sasaki, Akamatsu, Kitabatake, Tada, Ota, Toki, Yamana, Satomi, Hosokawa, Satake, Yamamoto, Hemi, Ogasawara, Yasuda, Takenouchi, Hiraga, Imagawa, Miyake, etc.[13]
There were 21 branches of the clan, each named after the emperor from whom it descended. Some of these lineages were populous, but a few did not produce descendants.
The Saga Genji are descendants of Emperor Saga. As Saga had many children, many were bestowed the uji Minamoto, declassing them from imperial succession. Among his sons, Makoto, Tokiwa, and Tōru took the position of Minister of the Left (sadaijin); they were among the most powerful in the Imperial Court in the early Heian period. Some of Tōru's descendants in particular settled the provinces and formed buke. Clans such as the Watanabe, Matsuura, and Kamachi descend from the Saga Genji.[14]
Noted Saga Genji and descendants include:
History records indicate that at least three of Emperor Saga's daughters were also made Minamoto (Minamoto no Kiyohime, Minamoto no Sadahime, and Minamoto no Yoshihime), but few records concerning his daughters are known.
They were descendants of Emperor Ninmyō. His sons Minamoto no Masaru and Minamoto no Hikaru were udaijin. Among Hikaru's descendants was Minamoto no Atsushi, adoptive father of the Saga Genji's Watanabe no Tsuna and father of the Seiwa Genji's Minamoto no Mitsunaka's wife.
These were descendants of Emperor Montoku. Among them, Minamoto no Yoshiari was a sadaijin, and among his descendants were the Sakado clan who were Hokumen no Bushi.
See main article: Seiwa Genji.
These were descendants of Emperor Seiwa. The most numerous of them were those descended from Minamoto no Tsunemoto, son of Prince Sadazumi. Hachimantarō Yoshiie of the Kawachi Genji was a leader of a buke. His descendants set up the Kamakura shogunate, making his a prestigious pedigree claimed by many buke, particularly for the direct descendants in the Ashikaga clan (that set up the Ashikaga shogunate) and the rival Nitta clan. Centuries later, Tokugawa Ieyasu would claim descent from the Seiwa Genji by way of the Nitta clan.
These were descendants of Emperor Yōzei. While Minamoto no Tsunemoto is termed the ancestor of the Seiwa Genji, there is evidence (rediscovered in the late 19th century by Hoshino Hisashi) suggesting that he was actually the grandson of Emperor Yōzei rather than of Emperor Seiwa. This theory is not widely accepted as fact, but as Yōzei was deposed for reprehensible behaviour, there would have been a compelling motive to claim descent from more auspicious origins if it were the case.
These were descendants of Emperor Kōkō. The great-grandson of his firstborn Prince Koretada, Kōshō, was the ancestor of a line of busshi, from which various styles of Buddhist sculpture emerged. Kōshō's grandson Kakujo established the Shichijō Bussho workshop.
These were descendants of Emperor Uda. Two sons of Prince Atsumi, Minamoto no Masanobu and Minamoto no Shigenobu became sadaijin. Masanobu's children in particular flourished, forming five dōjō houses as kuge, and as buke the Sasaki clan of the Ōmi Genji, and the Izumo Genji.
These were descendants of Emperor Daigo. His son Minamoto no Takaakira became a sadaijin, but his downfall came during the Anna incident. Takaakira's descendants include the Okamoto and Kawajiri clans. Daigo's grandson Minamoto no Hiromasa was a reputed musician.
These were descendants of Emperor Murakami. His grandson Morofusa was an udaijin and had many descendants, among them several houses of dōjō kuge. Until the Ashikaga clan took it during the Muromachi period, the title of Genji no Chōja always fell to one of Morofusa's progeny.
These were descendants of Emperor Reizei. Though they are included among the listing of 21 Genji lineages, no concrete record of the names of his descendants made Minamoto is known to survive.
These were descendants of Emperor Kazan. They became the dōjō Shirakawa family, which headed the Jingi-kan for centuries, responsible for the centralised aspects of Shinto.
These were descendants of Emperor Sanjō's son Prince Atsuakira. Starting with one of them, Minamoto no Michisue, the position of Ōkimi-no-kami (chief genealogist of the imperial family) in the Ministry of the Imperial Household was passed down hereditarily.
These were descendants of Emperor Go-Sanjō's son Prince Sukehito. Sukehito's son Minamoto no Arihito was a sadaijin. Minamoto no Yoritomo's vassal Tashiro Nobutsuna, who appears in the Tale of the Heike, was allegedly Arihito's grandson (according to the Genpei Jōsuiki).
This line consisted solely of Emperor Go-Shirakawa son Mochihito-ō (Takakura-no-Miya). As part of the succession dispute that led to the opening hostilities of the Genpei War, he was declassed (renamed "Minamoto no Mochimitsu") and exiled.
These were descendants of Emperor Juntoku's sons Tadanari-ō and Prince Yoshimune. The latter's grandson Yoshinari rose to sadaijin with the help of Ashikaga Yoshimitsu.
This line consisted solely of Emperor Go-Saga's grandson Prince Koreyasu. Koreyasu-ō was installed as a puppet shōgun (the seventh of the Kamakura shogunate) at a young age, and was renamed "Minamoto no Koreyasu" a few years later. After he was deposed, he regained royal status, and became a monk soon after, thereby losing the Minamoto name.
These were descendants of Emperor Go-Fukakusa's son Prince Hisaaki (the eighth shōgun of the Kamakura shogunate). Hisaaki's sons Prince Morikuni (the next shōgun) and Prince Hisayoshi were made Minamoto. Hisayoshi's adopted "nephew" (actually Nijō Michihira's son) Muneaki became a gon-dainagon (acting dainagon).
These were non-royal descendants of Emperor Ōgimachi. At first they were buke, but they later became dōjō-ke, the Hirohata family.