Lilburn Kingsbury papers has list of Howard Co Cemeteries. The list apparently. Its on page 21. He definitively makes the Oscar White Cemetery separate from Turner. All evidence indicates that the deceased were buried by O.R. White and WH Long in the Turner cemetery. Kingsbury lists it as west of Cherry Grove school on the Leonard farm which is the old Widow Turner farm. There is a matching 1 acre plat plot right across the road from Cherry Grove School with a modern house on it today. I'd love to look in their back yard.
Turner farm is listed as Detheridge on this 1876 plat which appears to be the best we have closest to time frame thanks to Fred Eggers. OR White holdings are easy to see. Turner farm building and orchard are on map, woods marked and about 200 yards west is WH Long cornfield.