premise: Robert Newton "Bob" Ford (January 31, 1862 – June 8, 1892) was an American outlaw best known for killing his gang leader Jesse James in April 1882, to collect a reward. For about a year, Ford and his older brother Charles performed paid re-enactments of the killing at publicity events. Later he drifted around the West, operating saloons and dance halls.
hypothesis: Ford was only twenty when he killed James. 
reason: Ford was born Jan 31st 1862, and killed James in April of 82- that means he would have been 20 years old. 