Galusha Pennypacker

Galusha Pennypacker was a Union general during the American Civil War. He is to this day the youngest person to hold the rank of brigadier general in the U.S. Army at the age of 20, he remains the only general too young to vote for the president who appointed him.

Pennypacker was born June 1, 1844 in Valley Forge, Pennsylvania, to a family who had a long history of service in the military. He was raised without having any memory of his parents after his mother died when he was still a baby and his father, who had taken part in the MexicanAmerican War, later became an adventurer in California. His grandfather also served in the military, fighting in the American Revolutionary War. Galusha and George Armstrong Custer, two of the youngest generals in the Civil War, were 5th cousins, both being descendents of Paulus Kuster . He was also cousin to General Benjamin Prentiss through the Pennypacker family.

Source: Wikipedia