The outlaws
In the mythology of the Wild West outlaws are killers and burglars. A cowboy is normally arrive and duel the criminal. Jesse James came from a wealthy family, was a fighter during the Civil War.
After the war, Jesse and his brother joined up the James Younger gang. James has been characterized at the Robin Hood , but historians have dismissed this because his gang keep all of their money for themselves. However, James was betrayed and killed in 1882 by a new recruit to his gang. James was certainly an outlaw and a notorious.
Now, perhaps one of most notorious names in the Old West is that of Billy the Kid who was orphaned at the age of 15.
After killing his first victim in self defense, Billy caught up in an economic turf war that turned shooty in 1878 where his employed was murdered.