I sent an email to Jason Walker and Will Erwin at the Texas State Cemetery, inquiring about the background of the monument to Joanna Troutman.  Will Erwin, the senior historian there, replied a few days later by sending a photograph, copies of related legislative documents, and articles about the monument.  He noted that the documentation does not mention a connection between this monument and the Texas/Georgia agreement of 1856.  R.W.T.