Your Minchew grandparents were Everett and Frances Pearl Ward Minchew. Your dad had three siblings I'm aware of and one half brother from his step mother Rose Hathatway, I believe.
Everett was one four children born to James Thomas and (what the reocrds say) Dolar Tunnell. I'm suspicious that was actually her name, but that is how she is indexed in order to find her. I think her name was really Delores Turnell or something similar.
I have a great deal more on your dad's family if you would care to get in touch with me. Too much to tpye out here. Get me an e-mail address and I can send you that.