Minamoto no Tsunemoto - The origin of Minamoto

A military commander in the mid-Heian period, he is the ancestor of the so-called Seiwa Genji clan. As the eldest son of Prince Sadazumi, the sixth son of Emperor Seiwa, he was called "Rokusono" (Prince Rokuson), and his mother is said to be the daughter of Minister of the Right Minamoto Yoshiari. However, the age relationship does not match, and Hoshino Hisashi presumes that he was the son of Prince Genhira, the son of Emperor Yozei ("The so-called Seiwa Genji of the world is the Yozei Genji"). In 938 (Tenkei 1), as Musashi no Suke, he entered the area together with Prince Okiyo no O (Provisional Guardian of the world), and fought against Adachi Gunji Takeshiba. Taira no Masakado mediated and settled the dispute, but Tsunemoto suspected Masakado and his companions and filed a complaint with the government for treason. Because of this incident Tsunemoto was imprisoned by the Saemon government, but when the Masakado Rebellion broke out he was pardoned and in February 940 he marched out as deputy general of the Seito Army. After his return he played an active role in putting down the rebellion of Fujiwara no Sumitomo as deputy chief of the reorganized Sanyo Nankai Bandit Squadron, and in September 941 at the Battle of Saeki-in in Bungo Province he captured the bandit leader Kuwahara Ikiyuki and others, and returned to Kyoto accompanied by Sumitomo's second in command, Saeki Koremoto. He passed away in November of the first year of the Owa era. His residence was in Ukyo Hachijo, which became Henjoshin-in after his death. It is now Rokusonno-jinja Shrine (Hachijo-cho, Minami-ku, Kyoto City). He reached the rank of Shoshii (Junior Fourth Rank), and is known to have held the titles of Kami (Lord) of Shinano, Iyo, and Musashi, Kozukenosuke, Saemonnosuke, Dazai no Daini, and Chinjufu Shogun, and his sons included Mitsunaka, Mitsumasa, Mitsusue, and Mankai. He was also skilled in waka poetry, and his works were included in the Shui Wakashu (Collection of Collected Poems).

[Toyohiko Fukuda]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

平安中期の武将で、いわゆる清和(せいわ)源氏の祖。清和天皇の第六皇子貞純親王の長子として「六孫王(ろくそんおう)」とよばれ、母は右大臣源能有(よしあり)の娘という。しかし年齢関係があわず、星野恒(ひさし)は陽成(ようぜい)天皇の皇子元平親王の子と推定している（「世ノ所謂清和源氏ハ陽成源氏ナル考」）。938年（天慶1）、武蔵介(むさしのすけ)として権守興世王(ごんのかみおきよのおう)とともに入部、足立(あだち)郡司武芝(たけしば)と争った。平将門(まさかど)が調停して紛争を収めたが、経基は将門らを疑い、謀反として政府に訴えた。この事件で経基は左衛門府に禁固されたが、将門の乱が起こると許され、940年2月、征東軍の副将軍として出陣する。帰還後に再編された追捕(ついぶ)山陽南海凶賊使の次官として藤原純友(すみとも)の反乱平定に活躍、941年9月の豊後(ぶんご)国佐伯院(さえきいん)の合戦で賊首桑原生行らを捕らえ、純友の次将佐伯是基(これもと)を連行して京都に帰った。応和(おうわ)元年11月卒去。その邸宅は右京八条にあり、死後遍照心院となる。いまの六孫王神社（京都市南区八条町）である。位階は正四位に達し、官歴としてはほかに信濃(しなの)、伊予、武蔵などの守(かみ)、上野介(こうずけのすけ)、左衛門佐(すけ)、大宰大弐(だざいのだいに)、鎮守府将軍などが伝えられ、子に満仲(みつなか)、満政(みつまさ)、満季(みつすえ)、満快(まんかい)などがある。和歌も巧みで『拾遺(しゅうい)和歌集』にとられている。

［福田豊彦］

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