No I have not found a birth record for Oscar. They were farmers, not sure where or if it would have been recorded. His name is J W Beatty. No real first name just initials. He used James W later in life. Oscar was a nick name. My father said it could have been a middle name for his dad, but I have had no luck with searching Oscar Beatty. The 1920 Census shows Minnie was a Widow, and on her death certificate in 1929 it states she was a widow. 1920 it shows all her kids dad was born in North Carolina. I have no clue how I would prove or disprove a William Beatty in NC.
I have death records for Minnie's Parents.