Uesugi Ujinori

Japanese: 上杉氏憲 - うえすぎ・うじのり

Year of death: January 10, 1417 (January 27, 1417)
Year of birth: Year of birth unknown. Military commander of the Muromachi period. Kanto Kanrei. Uemonnosuke. Buddhist name Zenshu. Son of Inukake Uesugi Tomomune. When his father retired in 1409, Ujinobu finally became the head of the Inukake family, served as the guardian of Kazusa (Chiba Prefecture), and in 1415 became Kanto Kanrei. However, in 1420 he resigned from his post and secretly began preparations to defeat the Kamakura kubo Ashikaga Mochiuji and the Kanto Kanrei Yamanouchi Uesugi Norikazu. Ujinobu supported Mochiuji's uncle Mitsutaka, while also having connections with Yoshitsugu, the younger brother of the Muromachi shogun Ashikaga Yoshimochi. He also plotted with Chiba Kanetane, Iwamatsu Mitsuzumi, Nasu Sukeyuki and other powerful samurai in the Kanto region to prepare a coup d'état, eventually rising in Kamakura on October 2, 1423, driving out Mochiuji and Norikazu and seizing power. However, he was soon defeated in a battle in Kamakura against a punitive force ordered by the shogunate, and committed suicide in Yukinoshita in January 1824. The reasons why Ujinobu planned the coup are said to have been mainly due to conflict with the Yamanouchi Uesugi clan, but the details are unknown. However, it is noteworthy that he was able to pull off a spectacular coup, even if only temporarily, by leveraging the power he had cultivated since his father Tomomune and the connections he had built with the samurai families of the Kanto region through marriage and other means. <References> Watanabe Sesuke, "Research on the Kanto-Centered Ashikaga Period"

(Yamada Kuniaki)

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

Japanese:

没年：応永24.1.10(1417.1.27)
生年：生年不詳
室町時代の武将。関東管領。右衛門佐。法名禅秀。犬懸上杉朝宗の子。応永16(1409)年に父が隠退すると,氏憲はようやく犬懸家の当主となり,上総(千葉県)守護を務め,同18年には関東管領となった。しかし22年には職を辞し,秘密裡に鎌倉公方足利持氏と関東管領山内上杉憲基を討つ準備を進めた。氏憲は持氏の叔父満隆を擁立する一方,室町幕府将軍足利義持の弟義嗣とも通じ,また女婿に当たる千葉兼胤,岩松満純,那須資之ら関東の有力な武家と謀ってクーデタを準備し,23年10月2日ついに鎌倉で蜂起,持氏と憲基を追い払い政権を掌握した。しかしまもなく幕府の命を受けた討伐軍と鎌倉で戦って敗れ,24年1月雪ノ下で自殺した。氏憲がクーデタを企図した理由は山内上杉氏との相剋を中心に説かれるが,詳細は不明である。しかし父朝宗以来培ってきた勢力と,婚姻などによって築き上げた関東の武家とのつながりを軸にして,一時的にせよ壮大なクーデタを成功させた事実は注目に値する。<参考文献>渡辺世祐『関東中心足利時代之研究』

(山田邦明)

出典　朝日日本歴史人物事典：（株）朝日新聞出版朝日日本歴史人物事典について　情報

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