Sadachika Ise

Japanese: 伊勢貞親 - いせ・さだちか

Year of death: Bunmei 5.2.21 (1473.3.19)
Year of birth: 1417
A shogunate official in the Muromachi period. Son of Sadakuni. Hyogo no Suke and Ise no Kami. In 1454, he succeeded his father Sadakuni in the service of the Muromachi shogunate, but his family position as steward of the administrative office was taken by Nikaido Tadayuki, and he finally assumed the position in 1460. After that, he teamed up with Suenori Shinzui, head of Shokokuji Inryoken, who was a monk recorder, and gradually became involved in shogunate politics, serving as the head magistrate of the palace and stables, and gaining the trust of Shogun Ashikaga Yoshimasa. What made their involvement in politics possible was not only the incompetence of Shogun Yoshimasa, but also the chaos caused by internal strife among the powerful shugo families and the resulting collapse of the senior retainer system. In July 1466, he intervened in a dispute in the Shiba clan and worked to support Yoshimitsu, and in September of the same year, he took advantage of the birth of Ashikaga Yoshihisa by Hino Tomiko to plot to assassinate Ashikaga Yoshimitsu, but was criticized by senior retainers such as Hosokawa Katsumoto and fled to Omi. This was the Bunsho Coup, which became the fuse for the Onin War that began six months later. He returned to the shogunate soon after the outbreak of the war, but Yoshimi, disgusted by this, threw himself into the Western Army (Yamana Mochitoyo's side), furthering the chaos of the war. In 1471, he resigned from his official position and became a monk. An authority on samurai customs, he gave his son Sadamune, "Ise Sadachika Kyokun," an important historical document that conveys the customs and educational ideas of Muromachi society that approved of bribery. He is also interesting as one of the main instigators of the war and as a man who stood at a turning point in shogunate politics. <References> Niki Kenichi, "Research on Medieval Samurai Ceremonies"

(Akira Imaya)

Source: Asahi Japanese Historical Biography: Asahi Shimbun Publications Inc. About Asahi Japanese Historical Biography

Japanese:

没年：文明5.2.21(1473.3.19)
生年：応永24(1417)
室町時代の幕府吏僚。貞国の子。兵庫助,伊勢守。享徳3(1454)年,父貞国の跡を継ぎ室町幕府に出仕したが,家職の政所執事は二階堂忠行に奪われ,寛正1(1460)年,ようやく同職に就任した。以後僧録司の相国寺蔭涼軒主季瓊真蘂と組んで次第に幕政に介入し,殿中惣奉行,御厩別当などを兼ね,将軍足利義政の信任を得た。彼らの政治干与を可能にしたのは,将軍義政の無能もあるが,有力守護家の内訌による混乱と,その結果としての宿老政治の破綻であった。文正1(1466)年7月には斯波家の紛議に介入して義敏擁立に動き,同年9月には日野富子の足利義尚出産を奇貨として足利義視暗殺を謀り,細川勝元ら宿老の指弾にあって近江へ逃亡した。これが文正の政変で,半年後にはじまる応仁の大乱の導火線となる。大乱勃発後ほどなく幕政に復帰したが,義視はこれを嫌悪して自ら西軍(山名持豊方)に投じ,戦乱の混迷に拍車をかけた。文明3(1471)年官を辞し,出家。武家故実の権威で,子の貞宗に与えた『伊勢貞親教訓』は賄賂を是認する室町社会の慣習や教育思想を伝える重要史料。大乱の張本人のひとりで,幕府政治の転換点に立つ人物としても興味深い。<参考文献>二木謙一『中世武家儀礼の研究』

(今谷明)

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