Thank you for your prompt and very detailed reply, and for the correction. I was clearly in error in stating that Henry's son James W. Palmer, born in Weakley County, TN ca 1843 was the James Palmer who married Hannah Hodge in 1869. I had doubts about this, so now the evidence is clear. The census record you found in 1870 clearly shows that this James Palmer, who married Hananh Hodge, was born in Missouri. Thanks also for the census records of James Palmer in Benton County, AR and later in the Indian Teritory (Oklahoma). I have looked at these and also think this is not my James W. Palmer, as James W. was living in Harrison County, TX in 1850, and Hunt County, TX in 1860.
I had already researched his sister Elizabeth J. Palmer, who married a Hugh Tilson, and had found that she had no descendants. The information about Elizabeth's parents on her 1936 death certificate is incorrect. James W. Palmer may have died by 1870, so I will have to keep looking. Many thanks again for your help and for correcting my mistake.