John Younger was the youngest of the “fighting Youngers”—but he was the deadliest. He killed his first man at age 15. In January 1871—still 19—he took out two more.
Reportedly, a drunken Younger had been harassing a disabled man in Dallas. The next morning, two deputy sheriffs—James McMahan and Charles Nichols tried to arrest Younger. He pulled a gun and killed both of them, then went on the run. When he got back to Missouri, the young man joined his brothers in The James-Younger Gang. John died in a shootout in 1874.