Nagayuki Kusano (Sachi)

...A powerful samurai family in Hizen and Chikugo during the Middle Ages. Descendants of the government officials (Dazaifu officials). The family was the same as the Kikuchi clan of Hizen and the Takagi clan of Hizen, and their original surname was Fujiwara. Their main family was Hizen, and they belonged to the Matsuura clan. At the end of the Heian period, Kusano Eihei was recommended by Minamoto no Yoritomo and was confirmed as both the local governor and the governor of Chikugo, and the chief priest of Hizen Kagami Shrine, for his meritorious service in the early days of the Genji clan, when the various clans in his jurisdiction were allied with the Heike clan. The Mongol Invasion Picture Book describes Tsunehisa (dharma name Enshu)'s brave fighting. During the Nanboku-cho period, Tsunehisa was based in Kusano Castle in Yamamoto County and initially played the role of a samurai, but as the Southern Court's Seiseifu advanced into Chikugo, Eiyuki (Sachi) followed Kikuchi Takemitsu and fought in various places.

*Some of the terminology explanations that mention "Kusano Nagayuki (Sachi)" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…中世，肥前，筑後に勢力のあった武家。府官(大宰府官人)の出。肥後の菊池氏や肥前の高木氏と同族で本姓藤原という。肥前が本貫で松浦（まつら）党に属す。平安末期，草野永平は管内諸氏が平家与同する中でいちはやく源氏方として活動した功により，源頼朝の推挙をえて筑後在国司･押領使両職，肥前鏡社大宮司職を安堵された。《蒙古襲来絵詞》には経永(法名円種)が奮戦した様子が描かれている。南北朝期，山本郡草野城にあって当初武家方として活動したが，永行(幸)は南朝征西府の筑後進出にともない，菊池武光に従って各地を転戦した。…

※「草野永行（幸）」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