Rear Admiral Cadwalader Ringgold, 

 U.S. Navy (1802- 1867) 



Commander of the Porpoise in the Wilkes' U. S. Exploring 

 Expedition (1838 - 1842). In 1853 he was placed in command of 

 the Northern Pacific and Arctic Surveying Expedition. However, 

 the following year while the ELxpedition was in China he suffered 

 severe attacks of intermittent fever which weakened him both 

 physically and mentally. A medical examination was ordered by 

 Commodore Matthew Peiry with the resulting pronouncement 

 that Ringgold was insane. Relieved of command, Ringgold was 

 sent home on the Susquehanna. In 1857, Ringgold underwent 

 another medical review and was declared fully recovered and 

 returned to active duty. He was promoted to Rear Admiral on 

 the retired list in 1866. 



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