The Iga Incident

Japanese: 伊賀氏の変 - いがしのへん

In 1224 (Gennin 1), an internal conflict arose within the Hojo clan, the regents, over the struggle for real power in the Kamakura Shogunate. After the death of regent Hojo Yoshitoki in June of that year, Yoshitoki's second wife, the Iga clan (Iga no Kami Fujiwara no Tomomitsu), conspired with her brother, the shogunal regent Iga Mitsumune, to appoint her own son, Hojo Masamura, as regent and her son-in-law Fujiwara Sanemasa (son of Ichijo Yoshiyasu) as shogun, in an attempt to seize real power in the Shogunate. This led to conflict with Hojo Masako, who wanted Yoshitoki's eldest son Yasutoki to become regent. The Iga clan and others tried to realize their ambitions by gaining the support of Miura Yoshimura, the Shogunate's most powerful clan leader, but Masako got the initiative by appointing Yasutoki as regent at the end of June, and persuaded Yoshimura the following month, thus ending the Iga clan and others' ambitions.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

1224年(元仁1)鎌倉幕府の実権争奪をめぐっておこった執権北条氏の内紛。この年6月執権北条義時の死後，義時の後妻伊賀氏(伊賀守藤原朝光女)は，兄弟の政所執事伊賀光宗とはかり，自分の子の北条政村を執権にし，女婿の藤原実雅(一条能保の子)を将軍に立てて幕府の実権をにぎろうとし，義時の長子泰時を執権にしようとする北条政子と対立した。伊賀氏らは幕府最大の豪族三浦義村を味方にして野心を実現しようとしたが，6月末機先を制して政子は泰時を執権に指名するとともに，翌月義村を説得してしまったため，伊賀氏らの野望はついえた。

出典　株式会社平凡社世界大百科事典第２版について　情報

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