I also had Susan Bentley as the mother of Oscar L Brayton, wife of Luther E 1819. I think this might be an error?
My source for the information was at the RI State Archives. In the Birth Records, on microfilm, he is listed as
DOB May 23 1848
Oscar Luther Brayton male white
born in Cranston, RI
parents Luther E + Susan T (Bentley) Brayton
occ of father Carpenter
Place of Birth of Father Warwick RI
Place of birth of Mother Warwick RI
This was entered into the record book as a delayed registration. The date it was entered appears to be Sept 17 1907 or 1909. Due to it not being at the time of his birth, I guess there is a higher possibility of errors. I have always questioned POB of Susan as not in RI... still trying to figure her out!