Well - one of the older girls married a Jones - her daughter is in the household in 1920:

Name: Elizabeth Jorns
[Elizabeth Janes]
Home in 1920: Johnston, Edgefield, South Carolina
Age: 7 years
Estimated birth year: abt 1913
Birthplace: North Carolina
Relation to Head of House: Granddaughter
Father's Birth Place: South Carolina
Mother's Birth Place: South Carolina
Marital Status: Single
Race: Mulatto
Sex: Female
Image: 768
Neighbors: View others on page
Household Members: Name Age
Elbert N Vance 61
Naomi Vance 22
Helen Vance 19
Elizabeth Jorns 7

the record says Jones - not Jorns, or Janes.

Have you checked to see what info is on Elbert's death certificate?

Name: Elbert Vance
Death Date: 19 Nov 1926
Age (Years): 64
Estimated birth year: 1862
Gender: Male
Color: Non-White (White)
County of Death: Edgefield
Volume Number: 36
Certificate Number: 21871

someone probably filled it out - might have been a daughter.

Denise