????
                     Pettis, William Button (b:1778)(d:)
                    |          ????
           Pettis, William Thompson (b:1815)(d:1856)
          |         |          ????
          |          Thompson, Mina C (b:1773-1774)(d:)
          |                    ????
 Pettis, Mary Elvira (b:1851-1852)(d:)
          |          ????
           Dickenson, Cynthia Lavinia (b:1818)(d:)
                     ????