In answer to your questions. Andrew J. Oller / Ollar's first wife was Delaney Baker. Second wife was Sarah Rice Stevens. Sarah & Andrew are my great grandfather & great grand mother.
Andrew J.'s mother & father were Jesse & Polly Oller
1850 census list children as 1. John, 2. Eleanor, 3. Beverly, 4.Louisa, 5. Elizabeth, 6. Andrew J., 7. David
I do hope that this is of some help.