Alexander Slidell Mackenzie

Alexander Slidell Mackenzie
Born
Alexander Slidell

(1803-04-06)April 6, 1803
New York City, New York
DiedSeptember 13, 1848(1848-09-13) (aged 45)
RelativesJohn Slidell (brother)
Matthew C. Perry (brother-in-law)
Ranald Slidell Mackenzie (son)
Alexander Slidell MacKenzie (son)
Military career
AllegianceUnited States of America
Branch
United States Navy
Service years
1815–1848
Rank
Commander
CommandsUSS Somers
Other workAuthor, naval historian

Alexander Slidell Mackenzie (April 6, 1803 – September 13, 1848), born Alexander Slidell, was a United States Navy officer, famous for his 1842 decision to execute three suspected mutineers aboard a ship under his command USS Somers in the Somers Mutiny. Mackenzie was also an accomplished man of letters, producing several volumes of travel writing and biographies of early important US naval figures, some of whom he knew personally.

Mackenzie was the brother of Senator John Slidell of Louisiana, who was later involved in the American Civil War's Trent Affair.

Mackenzie was the captain of USS Somers when it became the only US Navy ship to undergo a mutiny, which led to executions, including Philip Spencer, the 19-year-old son of the Secretary of War John C. Spencer.

Mackenzie's handling of the Somers Mutiny, including its lack of a lawful court martial, was highly controversial and public opinion ran against him. The mutiny proved the need for systematic training of cadets before they went to sea. In 1845, Secretary of the Navy George Bancroft seized on the Somers affair as a reason to establish the United States Naval Academy.