See census records for 1860 in McNairy County, TN. He is with Francis and William. Compare that with census records for 1850 in Hardeman County, Tn. His wife Jane is still alive. Francis is there and his daughter Dolly. Some of the younger children are hers, Elizabeth, William W, John Franklin, and a Dolly, but the last name on that census looks like Cradempsey, and that name is never found again. Dolly married John Nuckolls, who already had custody of her two children named Thomas and Lucretia. Long story there...there still remains a William and that may be Francis's child. I don't think it is Johns child because Jane was fairly old. You will find Dolly and John in Madison County, AR for 1860. Which is where a lot of the Vaughans went from Hawkins County, TN.