Frederick Campbell Stuart Hunter was born around 1837 in Virginia to Thomas and Maria Hunter. His father was a doctor who owned $5,000 of real estate in 1850. Hunter grew up and attended school in King George County, Virginia. He enlisted in the Confederate army on April 27, 1861, and mustered in as a 1st lieutenant in Company K of the 30th Virginia Infantry. He was promoted to captain on September 17, 1862. The regiment took part in the Seven Days Battles, the Second Battle of Bull Run, the Battle of Antietam, and the Battle of Fredericksburg. He was captured in August 1863 at Rappahannock Station, Virginia, and spent the next two years at Johnson’s Island prison camp. He was released in May 1865 and returned to his parent’s household in King George County. By 1870, he was working as a lawyer.
Hunter married Susan Rose Turner in King George County on April 7, 1874, and they had at least three children: Thomas, born around 1875; Caroline, born around 1876; and Frederick, born around 1878. By 1880, Hunter was serving as a county judge. He died in King George County in June 1895.