I have a photograph of Robert Gastrell Barton and his brother James Burke Barton. Robert Gastrell was named after his Uncle HM Gastrell and Aunt Lucy (James) Gastrell.
I can verify that Henry Martin and Lucy Elizabeth Gastrell were the Uncle and Aunt of the boys. Lucy's sister Alice Madeline (James) Kingsbury Cooley was an actress and travelled a lot when her daughter Maude ET Kingsbury (and Maude's brother Horace) were young. Alice's sister Lucy as well as their parents (David and Harriett James) spent many years caring for the kids. Maude married Robert Barton, They resided in Natchez as many documents can verify. The plantation on Homochitty was Lucy's house.
Robert W and Maude Marriage Date: 3 Jun 1885
Please see my public tree "McKean" and feel free to ask any additional questions. I understand that the initial question in this thread is quite old now.
I also have a photo of Robert and James' sister Alice when she came to California to visit her grandmother Alice Kingsbury Cooley.