I have done no research at all. Here is my story:
I grew up in northern Louisiana. My grandmother was Ollie Hardin. When I was a child, she whispered to me that her maiden name was Hardin, but that she did not tell people that because there was an outlaw in Texas by the same name. I am 60 years old. My grandmother was born in the late 1800's. My grandfather (her husband), Henry Roger Mays, was raised by his mother because his father supposedly abandoned the family. Supposedly some word made it back to them that he was doing something with horses and had died in a saloon somewhere - thought to be Texas. I was never interested in this until I saw a black and white photo of John Wesley Hardin on a PBS program about outlaws. It was like looking in the face of my son, Robert, except that his hair was light, not dark like the picture. The striking similarity gave me goosebumps and now I am curious. I live in St. Louis and would be willing to pay some agreed upon amount to have you research this. Do you do that?