Mr. Nagai

Japanese: 永井氏 - ながいうじ

A feudal lord in the early modern period. Fudai. The family name was Nagata, but when Naokatsu, a meritorious vassal of Tokugawa Ieyasu, was born, the family name was changed to Nagai because it was believed that the Nagata family line had assassinated Minamoto no Yoshitomo. The Nagai family formed a vassal relationship with the Tokugawa through Naokatsu's father, Shigemoto, who served Ieyasu's father, Hirotada, and lived in Ohama, Mikawa Province. Naokatsu achieved military success by killing Ikeda (Tsuneoki) in the Battle of Komaki and Nagakute, and was awarded 72,000 koku in Koga, Shimousa Province, and his son, Naomasa, became a senior councilor and was awarded 100,000 koku in Yodo Castle. In 1680 (Enpo 8), Naonaga was assassinated by Naito Tadakatsu and his territory was confiscated, but his younger brother Naomitsu was awarded 10,000 koku in Shinjo, Yamato Province, and later established a jin'ya in Kushira.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

近世大名。譜代。長田を姓としたが，徳川家康の功臣直勝のとき，長田姓は源義朝を殺害した家筋であるとのことで永井氏に改めた。永井氏が徳川氏と主従関係を結んだのは直勝の父重元で，家康の父広忠に仕え三河国大浜に居住した。直勝は小牧･長久手の戦で，池田(恒興)を討ち取る戦功をあげ，下総国古河で7万2000石を，子尚政は老中となり淀城10万石を領した。1680年(延宝8)尚長が内藤忠勝に殺害されて領地は収公されたが，弟の直円（なおみつ）が大和国新庄で1万石を与えられ，のち櫛羅に陣屋を置いた。

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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