Sueshige Kakizaki

...In the spring of 1456 (Kōsei 2), a Japanese person stabbed an Ainu youth to death in the blacksmith village of Shinori (now Shinori-cho, Hakodate City) near Hakodate, which developed into a major Ainu uprising led by the eastern Ainu chief Koshamain in the following year (Choroku 1). As a result of this uprising, the castles of the small Japanese clans that had been built at the southern tip of the Oshima Peninsula and fought for supremacy at that time fell one after another, leaving only two castles remaining: Shimonokunimasa's Shigebekku (now Moheji, Kamiiso-cho) and Kakizaki Sueshige's Hanazawa Castle (now Kaminokuni, Kaminokuni-cho). However, Takeda Nobuhiro (the ancestor of the Matsumae clan), who was under Kakizaki Sueshige, the lord of Hanazawa Castle, led a counterattack by the Japanese troops and finally shot and killed Koshamain and his son, which rapidly weakened the power of the Ainu forces and led to their suppression. There are many unknowns about the circumstances of the uprising and the behavior of the Japanese, but the advance of the Japanese into Ezo intensified conflict with the Ainu people, eventually resulting in a major ethnic counterattack.

*Some of the terminology that refers to "Kakizaki Toshiharu" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…1456年(康正2)春，箱館近郊志濃里（しのり）(現，函館市志海苔町)の鍛冶屋村で和人がアイヌの青年を刺殺したことに端を発し，翌57年(長禄1)東部アイヌの首長コシャマインに率いられたアイヌ民族の大蜂起へと発展した。この蜂起によって，当時渡島半島南端に館（たて）を築いて群雄割拠していた和人小豪族の諸館が相次いで陥落，わずかに下国家政の茂別館(現，上磯町茂辺地)と蠣崎季繁（かきざきすえしげ）の花沢館(現，上ノ国町上ノ国)の2館を残すのみとなったが，花沢館主蠣崎季繁のもとにあった武田信広(松前氏の祖)が和人軍を指揮して反撃を加え，ついにコシャマイン父子を射殺，これによりアイヌ軍の勢力は急速に弱まり鎮圧されるにいたった。蜂起の経緯や和人の動向については不明な点が多いが，和人の蝦夷地への進出がアイヌ民族との矛盾を激化させ，ついに民族的な大反撃となって結果したこと。…

※「蠣崎季繁」について言及している用語解説の一部を掲載しています。

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