John O'Fallon
John O'Fallon | |
|---|---|
| Born | November 17, 1791 Jefferson County, Kentucky |
| Died | December 17, 1865 (aged 74) St. Louis, Missouri |
| Buried | |
| Allegiance | United States of America |
| Branch | United States Army |
| Years of service | 1812—1818 |
| Rank | Captain |
| Unit | |
| Signature | |
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John O'Fallon (November 17, 1791 – December 17, 1865) was a businessman, philanthropist, and military officer, a nephew of the explorer William Clark. During the 19th century he rose to become the wealthiest person in St. Louis, Missouri. The cities of O'Fallon, Illinois and O'Fallon, Missouri are named after him. In 1857, he donated over $1 million to establish the O'Fallon Institute at what is now Washington University in St. Louis.