Melvin Joe Parker had siblings: Dora Fay, Billy Gene, and Mary Ann. Joe T. Parker's mother has an online death certificate filed as Mrs. V. E. Jones (27 Feb 1885 - 10 Apr 1934). She also died in Lamar County. Her family, surname Martin, is easier to trace than her first husband's, Joe Parker. Unable to isolate the Parkers in 1900-1920 Mississippi. Almost certain they were in that state 'cause J. T. (1912), Joe (1915), and Alva (1916) were enumerated as Mississippi-natives. By 1930 TX-Lamar-Paris-District 3-Image 5, their mom was remarried to Vernon E. Jones. Mr. Jones was already a resident of Lamar but I did not find a marriage record. Some of J. T. Parker's aunts/uncles (surname Martin) were also found in Lamar County.