Volume IV of "The James C. Babb Sr. Family of Nansemond County, Virginia and Descendents" by Gordon. Otis Parker, Jr., g-g-grandson of James C. Babb, Sr., b. 1794, d. Abt 1859, lists all of the children of James C. Babb, Sr. as;
- Nathaniel Babb, b. 1826, d. 1904
- Sarah Babb, b. 1828
- Elizabeth Babb, b. 1829
- William K. Babb, b. 1830
- Margaret Jane Babb, b. 1834, d. 1888
- George Washington Babb, b. 1836, d. 1911
- Frances Virginia Babb, b. 1840
- James C. Babb, Jr., b. 1842
- Texanna Babb, b. 1844
- Robert Edwin Babb, b. 1848, d. 1924
- Thomas Walter Babb, b. 1849, d. 1908

His wife was Cynthia Jones, b. 1810, d. 1873

There is really not room for your Susan Ann Jones to fit in as an unknown daughter so I suggest that she was living with the Dempsey Babb family as a servant in 1850 and that her parents really were James and Cinthy Jones.

It is possible that she was related to the Cynthia Jones that married James C. Babb, but difficult to determine. The volume cited notes that the mother of Cynthia Jones was Mary "Polly" Jones, but her father's name is not known.

Gordon Otis Parker Jr. is a very god source for Nansemond Babb information. If you are interested, write to me directly and I will give you his contact information.