Thank you very much for the information!!
I found his real birth date, November 11, 1903 (1903 matches SSDI). It was written in a family bible my grandmother had.
My grandmother said Cravens, but she's only mentioned it to me one time. The first time she told me the story she asked if I'd heard anything about it and I said no so she assumed it was false. Then randomly brought it up again last Fourth of July saying she knows her father went by that name once or twice. It seems like either unintentionally or intentionally there's a lot of detail being left out of the story.
If you happen to make the drive that would be wonderful, but please don't trouble yourself for the high chance we could find nothing since there's so many holes in this story.
Thank you again!