Betty Parman is misinformation.She married a relative on my mother's side.
I know that both my Sprinkle grandparents died before I was born (your information says only the grandfather). My sister only remembers seeing him when she was a child in the hospital when he was dying. My grandfather's second wife (with whom my father kept no contact after she destroyed all the photographs of my grandmother after marrying my grandfather) may have lived to 1974, but not my father's mother.
My wife tells me she got some family records from my mother.In the coming days I'll dig them out and give you that information.I would appreciate the Luther's ancestry and Texas close relatives if you can share that.