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John Percival | |
|---|---|
 Captain John "Mad Jack" Percival | |
| Nickname(s) | Mad Jack |
| Born | 3 April 1779 West Barnstable, Massachusetts |
| Died | 7 September 1862 (aged 83) Dorchester, Massachusetts |
| Buried | West Barnstable, Massachusetts |
| Allegiance | United States |
| Service | Navy |
| Years of service | 1809–1862 |
| Rank | Captain |
John Percival (3 April 1779 – 7 September 1862), known as Mad Jack Percival, was a celebrated officer in the United States Navy during the Quasi-War with France, the War of 1812, the campaign against West Indies pirates, and the Mexican–American War.