You're welcome, Debbie. I have a feeling you'll find the search for Hickman will be more difficult. Before 1850, Census data listed only head of household and catagories of household as number of free white, free black and slaves in different age groups. I found no marriage info for the couple but there is one Hickman family that may lead you somewhere. Assuming Phebe was married at age 15 and after the Census. A long shot, I know. Good luck in your search. BTW, there was a school in Christiana called 111-C that may have documented any of the children remaining in the area post 1930. It was a historic site but burned before it could be restored.
Name: Phebe E Hickman Age in 1860: 15 Birth Year: abt 1845 Birthplace: Delaware Home in 1860: Brandywine Hundred, New Castle, Delaware Gender: Female Post Office: Wilmington Household Members: Name Age James Hickman 40 Martha H Hickman 41 William W Hickman 18 George M Hickman 17 Phebe E Hickman 15 James C Hickman 11 Charles L Hickman 7 Levi A Hickman 3 Phebe Wharton 67 Mary B Barney 6