Bobby Blue Bland was born Robert Calvin Brooks. He later took his father's surname Bland according to his biography on Malaco.com.

On the Shelby, Tennesee 1930 census I located one Robert Brooks age 3/12.

Robert Brooks
Home in 1930: District 1, Shelby, Tennessee
Age: 0
Estimated Birth Year: abt 1930
Birthplace: Tennessee
Relation to Head of House: Grandchild
Race: Negro
Household Members: Name Age
Wesley Smith 39
Bernie Smith 36
Martha Smith 18
Mary Smith 17
Josephine Smith 16
Beadtrice Smith 14
Alphonse Smith 11
Blanche Smith 9
Dude Smith 7
Nettie Smith 3
Robert Brooks 3/12
Maurice Brooks 3/12
Source Citation: Year: 1930; Census Place: District 1, Shelby, Tennessee; Roll: 2272; Page: 18A; Enumeration District: 158; Image: 70.0.

Hope this helps.