Charles Johnson, MD, USA

This was intensified in April of 1863 by the sudden death of their son Charles, killed instantly when his skull fractured after being thrown from a horse. Having moved successfully from publishing a small-Union newspaper to earning a medical degree and then being appointed a Union Army surgeon with the rank of Colonel, 33 year old Charles Johnson had become an especial point of pride for Eliza Johnson and his unexpected death was one from which she was said to have never emotionally recovered, forever sensitive even to the mention of his name. The one consolation during this period was that daughter Martha Patterson, her husband and two children rejoined Eliza Johnson and lived in the same home with her.

http://www.firstladies.org/biographies/firstladies.aspx?biography=18

Charles Johnson, son of President Andrew Johnson, oval, bust view. Charles Johnson was Surgeon during the Civil War, but was killed in 1863, when thrown from a horse. During this period of time, Andrew Johnson was Military Governor of The State of Tennessee.