Hi Donna, In the 1930 Census, Robert A. Stokes states that he is married (no wife with him) he is a lodger, age 54, married, married at age 26, b. Mississippi, Father b. S.C., Mother b. Tennessee.(Notice that the parents birth places are different than what you have found so far).
Robert is working as a Salesman at a Grocery Store. He was living on California Avenue.
Robert A Stokes Age:54 Estimated birth year:abt 1876 Birthplace:Mississippi Relation to head-of-house:Lodger Race:White Home in 1930:Oklahoma City, Oklahoma, Oklahoma Year: 1930; Census Place: Oklahoma City, Oklahoma, Oklahoma; Roll: 1920; Page:; Enumeration District: 118; Image: 743.0.
S.B. Stokes (1930) is age 27, a patient at the Central Oklahoma State Hospital, Married, at age 16? b. Oklahoma, Father b. Mississippi, Mother b. Mississippi (no occupation)
Name:S B Stokes Age:27 Estimated birth year:abt 1903 Birthplace:Oklahoma Relation to head-of-house:Patient Race:White Home in 1930:Norman, Cleveland, Oklahoma Year: 1930; Census Place: Norman, Cleveland, Oklahoma; Roll: 1898; Page:; Enumeration District: 23; Image: 507.0.
No sign of Hester yet in 1930, I did try the name Eaton also.
Hope this helps, Karen (Not a relative, just want to help)