Battle of the Onikiribe

…A powerful clan leader in Mutsu Province during the mid-Heian period. His father was Tadayoshi. He was originally called Yorishige, but changed his name to Yoritoki to avoid sharing the same name as Mutsu no Kami Minamoto no Yoriyoshi. Since his ancestors, Yoritoki has been in a position to lead the Emishi as the governor of the Oku Rokugun (the governor of six counties in central Iwate Prefecture: Isawa, Esashi, Waga, Hienuki, Shiwa, and Iwate). He was in conflict with the Mutsu kokushi from early on, and in the Eisho era (1046-53), he fought against the combined forces of Mutsu no Kami Fujiwara no Takato and Akita Jōkyō no Suke Taira no Shigenari at Onikiribe (Onikobe, Naruko Town, Miyagi Prefecture) and won. …

*Some of the terminology used in reference to the "Battle of Onikiribe" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…平安中期の陸奥国の豪族。父は忠良。はじめ頼良といったが，陸奥守源頼義の名と同じであることをはばかって，頼時と改名した。父祖以来〈奥六郡の司〉(岩手県中央部の胆沢，江刺，和賀，稗貫，紫波，岩手の6郡の郡司)として蝦夷を統率する地位にあった。早くから陸奥国司と対立し，永承年間(1046‐53)には陸奥守藤原登任（たかとう），秋田城介平重成の連合軍と鬼切部（おにきりべ）(宮城県鳴子町鬼首（おにこうべ）)において戦い，勝利を収めた。…

※「鬼切部の戦」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