Known info for Parker/Denison from family documents:
Emma Evelyn Parker born 1895 in Lamar Co, Tx married Alcy R. Denison in 1913, lived in Fannin Co. Tx. Eva had a brother who lived with them in 1920, John Parker. John Parker's birth was 29 Jan 1899.
Names on backs of family photos (no dates): Flouretta Parker, Aunt Evie's brother John's daughter. Group photo of J.C. Parker, Vadah B. Parker, Nina Ruth Parker, Shirley Jean Parker, Jackie Dayd Ensley (referenced as a grandson, but of who?)
School photo of Nina Ruth Parker age 10, J. P. Cowen school, no other reference.
So, I started searching for John Parker and his girls names and found a John Parker who married Cloie Bounds, who had children with the same names. John and Cloie were in the Nolan Co. Tx area. His death cert gave names of his parents John E Parker and Jennie Woods.....
There are so many Parkers around the Grayson, Lamar, Fannin area. I have already ruled out one line I thought was possible connection. Also there has been family myth that Eva Parker's family MIGHT have come from the Indian Chief Quanah Parker family. To date, I can not prove/disprove that.