I found Emely and Civil on the 1850 Robeson Co. North Carolina (and Levi) Census.
Did either one of them die when death certificates were used? If the Informant knew their parents names, they will be on their death certificates.
They might be in their death notices/obits too.
Levi and Emely had only been married a year in 1850 which tells me the girls parents probably died 1840-1849 in Robeson Co. NC. The court would have guardianship records for at least Civil and maybe Emily.
I'd start the search for those records in Robeson Co., NC. They might not be indexed (probably not online) and might have to find them on microfilm and then look for them. Successful Searching!