Alexander Mackenzie

Alexander Slidell Mackenzie, born in 1803, was a United States Navy officer and a published author. He is most remembered for his command of the USS Somers in 1842, during which he ordered the execution of three sailors accused of mutiny. This event, known as the Somers Mutiny, occurred without a formal court-martial and generated significant public controversy, though Mackenzie was later exonerated by naval inquiries. The incident ultimately contributed to the establishment of the United States Naval Academy. Mackenzie also had a literary career, penning travelogues and biographies of prominent naval figures, some of whom he knew personally. He was from a well-connected family, being the brother of Senator John Slidell and married into a family with naval ties through Commodore Matthew C. Perry. Mackenzie died suddenly in 1848.

Alexander Slidell Mackenzie entered the U.S. Navy as a midshipman in 1815. He rose through the ranks, becoming a lieutenant in 1825 and a commander in 1841. In 1842, he took command of the USS Somers, a ship that was also serving as an experimental schoolship for naval apprentices. During a voyage, Mackenzie became aware of a suspected mutiny plot, led by Midshipman Philip Spencer, the son of the Secretary of War. Lacking the authority to convene a court-martial, Mackenzie had his officers investigate. The officers unanimously recommended the execution of Spencer and two other sailors, which Mackenzie carried out at sea on December 1, 1842. This action, the only instance of executions stemming from a mutiny aboard a U.S. Navy ship, proved highly contentious. Despite being cleared by subsequent naval investigations and a court-martial, public opinion was divided, and the event heavily influenced his reputation.

Beyond his naval service, Mackenzie was a recognized man of letters. He authored several books, including travel writings like 'A Year in Spain' and 'Spain Revisited,' which gained him recognition in both America and England. He also wrote biographies of significant American naval heroes such as John Paul Jones, Commodore Stephen Decatur, and his brother-in-law, Commodore Oliver Hazard Perry. His literary endeavors placed him in circles with other prominent American writers of his time, including Washington Irving and Henry Wadsworth Longfellow. Mackenzie's family background was influential; he was the brother of Senator John Slidell and his marriage to Jane Slidell connected him to the prominent Perry naval family. He officially changed his surname to Mackenzie in 1837–1838, reportedly to inherit family wealth.

The controversial Somers Mutiny cast a long shadow over Mackenzie's career. While he was officially exonerated, the lack of a formal court-martial for the executions meant he did not receive the customary commendations afforded to officers cleared in such proceedings. The affair, however, highlighted deficiencies in naval training, leading Secretary of the Navy George Bancroft to establish the United States Naval Academy in 1845. Mackenzie's conduct during the mutiny was fiercely debated, with notable criticism coming from author James Fenimore Cooper. Mackenzie continued to serve in the Navy and had two sons, one of whom, Ranald Slidell Mackenzie, became a distinguished Union Army general in the Civil War. Alexander Slidell Mackenzie died suddenly on September 13, 1848, from heart disease at his home near Tarrytown, New York.