Hiram W. Sibley | |
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| Born | Hiram W. Sibley February 6, 1807 |
| Died | July 12, 1888 (aged 81) Rochester, New York, U.S. |
| Known for | Co-founder and President of Western Union |
| Children | 4, including Emily Sibley Watson |
Hiram W. Sibley (February 6, 1807 – July 12, 1888), was an American industrialist, entrepreneur, and philanthropist who was a pioneer of the telegraph in the United States.