Could this be your Julia Brown in 1930?:
Name: Julia Brown
Home in 1930: Charleston, Charleston, South Carolina
Estimated birth year: abt 1893
Birthplace: South Carolina
Relation to Head of House: Roomer
Head of Household is a Harriet Fairchild, 62, born 1868 SC. There is one other roomer listed, Remie Bennett, 32, born 1898 SC.
Source Citation: Year: 1930; Census Place: Charleston, Charleston, South Carolina; Roll: 2189; Page: 8B; Enumeration District: 32; Image: 1125.0.