Dion,

This was the only William Brown with sons named William and Rosevelt that I was able to find.

1920 Census Dist 74, DeKalb, Kershaw Co., SC
William Brown Head M B 34 married b. SC Father SC Mother SC Occu: Farmer
Mammie Brown Wife F B 30 married b. SC Father SC Mother SC Occu: Housework
Willie Brown Son M B 10 single b. SC Father SC Mother SC
Estell Brown Daughter F B 9 single b. SC Father SC Mother SC
James Brown Son M B 7 single b. SC Father SC Mother SC
Larnie Brown Son M B 4 single b. SC Father SC Mother SC
Rosevelt Brown Son M B 2 single b. SC Father SC Mother SC