Hi, Lynn! No definite proof, but contributed trees give the following 1850 Census as John and George’s family. Ages and states of nativity match

John Harris Household, 1850 U.S. Census, Eastern Division, Monroe County, Mississippi Population Schedule, Stamped Page 54, Lines 2-8, Dwelling 727, family 758, National Archives Micropublication M432, Roll 378

o John Harris, 36, farmer, $200, TN (married within the year)
o Margery, 34, TN (married within the year)
o Mary A. Harris, 10, AL
o John W., 8, MS (1841-42)
o George, 6, MS (1844)
o Columbus L., 5, MS
o Leanna, 3, MS

Thanks so much for the information re Alva Pittman. You are a treasure trove.