Yes, Many Have Claimed To Be JJ
The two most public claims are J.Frank Dalton and James L Courtney
Courtney is out of Texas.
Dalton is MO and then passed in Texas claiming to be 103yrs old.
With both of these guys if you google them a boatload of conflicting stories will pop up. I'd pick Courtney to start with and search whatever sounds plausible to you, then search Census, Property, Tax, Birth and Death Records as well as Military Rolls. Courtney will come up as an Union Solidier and the Dates Will Match. JJ as we all know was Confederate. You will have to look at the reasons stating the Union records show him that way and then decide what you think...
Dalton has much more to research and many more people involved.
There is a ton to research on both of these men...very convoluted and a lot to try and make sense of. Unfortunately Most detailed accounts that are out there are written by people who have/had something to gain. But the timelines and accounts can be waded through if you have the patience! lol!
ECS Posted a link a page or two back regarding a Cole Younger Interview that has some info on JWJ that does have some personal accounts from Jesse James, Jr. He was very young at the time of the shooting so his personal recollections are that of a child which he states and then the stories he tells are from his Mother, Grandmother, family and friends of his fathers which he also states. It's half of a book he wrote. I haven't finished reading his story there yet. He pretty much starts the story when they moved to KCMO from Nashville, TN.
It's a pretty cool site...Thanks ECS!
I'm HOPING the Texas members will jump in here, they have personal accounts from Courtney's descendants...And are local to where he was.
Happy Researching,
Kace