looking for William C. Dixon in Franklin Co. , MO. Born in VA in 1815.

William was married to Mary (Martha) Jane Weaver in Anderson Co., Tenn. He is listed in the 1850 census as a surgeon. Two children are listed as Benjamin and Hannable, both born in Tenn. I believe he was a surgeon in the Confederate Army. Looking for his parents, places of birth and ancestry.
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More info - by word of mouth, I heard that William was captured and held at the Union prison in Illinois, where he died of dysentery. I have also found estate records in Grubbville, MO. Can anyone help?

1850 Census shows:
William C Dixon age 35 Physician b va
Martha wife 24 b tn (would have been abt 16 at time of Marriage or William was previously married)
Children:
Benjamin 8 son b tn
Hannibil 6 son b tn
Francis 4 son b mo
Elizabeth A 1 Daug b mo