It looks like his father was born in Georgia. This is the only Roy Parker around that time in Anderson.
There were 3 others about the same age in Newbury, Richland, and Spartanburg. He was the only one in Anderson.
I posted the transcriptions so that you could look at them. I found most of them on findmypast. If they are not correct you can delete them. I wanted you to be able to look at them. There are still going to be some records that are not as easy to access for him, like a birth certificate. You may be able to order one as a family member but it is probably not available to the general public yet.