William Gates LeDuc | |
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| 4th United States Commissioner of Agriculture | |
| In office July 1, 1877 – 1881 | |
| Preceded by | Frederick Watts |
| Succeeded by | George B. Loring |
| Personal details | |
| Born | March 29, 1823 Wilkesville, Ohio, U.S. |
| Died | October 30, 1917 (aged 94) Hastings, Minnesota, U.S. |
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William Gates LeDuc (March 29, 1823 – October 30, 1917) was an American politician from Minnesota who served as the fourth United States commissioner of agriculture from July 1, 1877, to 1881. He also served in the Union Army during the American Civil War and was a prominent figure in the early development of Minnesota.