Izawa Tamenaga

Japanese: 井沢為永 - いざわ・ためなが

Year of death: Genbun 3.3.1 (April 19, 1738)
Year of birth: 1654
A mid-Edo period agricultural politician and flood control expert. Commonly known as Yasobei. Born in Mizoguchi Village, Naka County, Kii Province (Kainan City, Wakayama Prefecture). Well versed in arithmetic and civil engineering, he was appointed to the Kishu (Wakayama) Domain, where he worked on flood control civil engineering projects for about 30 years, achieving great results. Later, in 1722, Tokugawa Yoshimune, who had been the lord of Kishu Domain and had become the 8th Shogun, appointed him as a shogunate official with a stipend of 200 koku. He subsequently developed new fields and improved rivers in various parts of the Kanto region, Omi, Harima, and other places. Of these, the development of Minuma in Adachi County, Musashi Province, and the construction of the Minumadai Irrigation Canal, which was completed in 1780, are famous. In 1781, he was given a stipend of 500 koku, and in 1782, he was appointed as a Kanjo Ginmiyaku (financial bureaucrat), and in 1787, he also served as Mino Gundai (gundai) governor. He resigned from both positions in 1737, and died the following year.

(Oishi Manabu)

Source: Asahi Japanese Historical Biography: Asahi Shimbun Publications Inc. About Asahi Japanese Historical Biography

Japanese:

没年：元文3.3.1(1738.4.19)
生年：承応3(1654)
江戸中期の農政家,治水家。通称弥惣兵衛。紀伊国那珂郡溝口村(和歌山県海南市)の生まれ。算術,土木に通じ紀州(和歌山)藩に登用され,約30年間にわたり治水土木工事に従事,成果をあげる。その後紀州藩主から8代将軍に就任した徳川吉宗により,享保7(1722)年に200石の幕臣として登用された。以後関東各地,近江,播磨その他などで新田開発や河川の改修などを行った。このうち13年に完成した武蔵国足立郡の見沼開発,見沼代用水の開削は有名。10年に500石となり,16年勘定吟味役に就任,20年美濃郡代を兼務した。元文2(1737)年両職を辞し,翌年没した。

(大石学)

出典　朝日日本歴史人物事典：（株）朝日新聞出版朝日日本歴史人物事典について　情報

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