William Burt / Lorena Silcriggs

I'm looking for the names of the children born to William Burt, b 1830 and Lorena Silcriggs (sp?), b 1835.They were married in 1852.Specifically looking for Frances Burt, b 1866, who married James M. Mitchell.They lived in the area of Karnes Co/Gonzales Co/DeWitt Co., possibly Gillette, Nixon, or Davy.