Babe died 7 Aug 1957. Even though he was born in Harlem, Georgia, his mother was Scottish. He was born Norvell Hardy, but took on his dad's name, Oliver when he turned 18. Norvell was his mother's maiden name. His dad died when he was very young.
He got the name Babe through an Italian hairdresser who kept commenting on his baby like face (this is when he was at college!) The name stuck for the rest of his life.
Co-incidentally, one of his golfing partners was George Herman 'Babe' Ruth!