Facts and Events
In 1864, he joined the Confederate army (at a very young age) with his brothers, Cole and James, and soon became a guerilla under Quantrill. Together with James, he was captured in the ambush in which Quantrill was killed and spent the rest of the war in a Union military prison.
In Jan 1866, in Independence, Missouri, he shot and killed an ex-soldier who was harassing his mother and younger brother. The court ruled it self-defense because the soldier was armed.
On 20 Jan 1871, while living with several of his brothers in Dallas, Texas, he shot and killed two Dallas deputy sheriffs.
On 17 Mar 1874, he was waylaid near Roscoe, in St. Clair County, by Pinkerton agents and was killed in the ensuing gun fight. He was originally buried by the roadside by his brother, Jim. His body later was reinterred in an unmarked grave in the nearby Yeater Cemetery, but a marker was later erected by the family.
Dallas County, 1870 census:
For more information, see the EN Wikipedia article John Younger.