Vance, found this information, this is the correc Robert Herschel Bull, wife is Mariam, might be known as May F Hays?
I gave you the 1920 census for Oklahoma, here is the 1930 census for Homer, Claiborne, Louisiana, Thanks for your help.

United States Census 1930
Homer, Claiborne, Louisiana

R Herchel Buell, M 40
Marion Buell F 29
Mamie Buell, F, 11
Ira L Buell M, 9