Thomas was born in 1809. He passed away after 1880.
In fall of 1856 Thomas and "Anna" traveled by wagon train from Due West to Tippah County, MS. They were accompanied by their children and other members of their families as well members of the Agnew, Haddon, and James Martin families. Also in this group was Anna's brother, Robert Caldwell Richey and his family as well as Andrew Jackson Hawthorne, son of Andrew Cowan Hawthorn. Andrew went on to Arkansas. (See other notes under his name) John Martin (1821-97) had moved to Tippah County (now Union) in the early 1850's and sent back glowing reports about the fertility of the soil and the good opportunities there for settlers.
Union County was formed in 1870 by combining parts of Tippah, Pontotoc, and Lee Counties. The area where the Hawthornes lived was on the very edge of the new Union/Tippah county line. 
Found the following reference in: DIARY of SAMUEL A. AGNEW Typed volume IV containing Part of manuscript volume 7B September 27, 1863--June 30, 1864
October 11, 1863
Rode over to Mr. Wm. Sanders where there was an appointment for preaching. Mr. Sanders united with the Church this evening. He is prostrated on a bed of sickness having had a long and severe spell of fever. He has a large and painful rising back of his left jaw under the ear. He thinks he is some better but is still very weak. Mr. Young preached from Matt 11:28. After preaching 4 or 5 of his children were baptized by Mr. Robison. I remember the following names. Anna Fair Jefferson Davis Rebecca &c. On Yesterday Thomas Augustus and Margaret Henrietta Hawthorne were baptized.
Who are these two Hawthorne children? I would assume that these are either Thomas & "Anny's" or Harvey and "Emma's". If my records are correct, Harvey's son Thomas was born in 1865 so I would assume that this was Thomas's son who was born 1853. If this was Thomas's son then it would seem that Margaret Henrietta would have also been one of his children.
↑ Hawthornes of Long Cane Headwaters Reference #04011, Thomas Hathorn Family Bible.
Cemeteries -"Union County, MS Cemetery Records" published by ADR in 1980
Adelia (Fay) Purnell Morris of New Albany, MS - dau. Lillian Hawthorne Purnell
Census Records 1850-1870
"United States Census, 1850," index and images, FamilySearch (Link : accessed 24 March 2015), Thomas Hawthorn, Abbeville county, part of, Abbeville, South Carolina, United States; citing family 2354, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"United States Census, 1860," index, FamilySearch (Link : accessed 24 March 2015), Thos Hawthorn, [Blank], Abbeville, South Carolina, United States; from "1860 U.S. Federal Census - Population," Fold3.com; citing p. 299, household ID 2174, NARA microfilm publication M653, National Archives and Records Administration, Washington, D.C.; FHL microfilm 805,212.
"United States Census, 1870," index and images, FamilySearch (Link : accessed 24 March 2015), T Hawthorn, Mississippi, United States; citing p. 13, family 102, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,249.
"United States Census, 1880," index and images, FamilySearch (Link : accessed 24 March 2015), Thomas Hawthorn, Beat 3, Tippah, Mississippi, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll ; FHL microfilm .
"Find A Grave Index," index, FamilySearch (Link : accessed 24 March 2015), Thomas Hawthorn, 1882; Burial, Baldwyn, Lee, Mississippi, United States of America, Old Bethany Cemetery; citing record ID 15982962, Find a Grave, http://www.findagrave.com.
It may be possible to confirm family relationships with Thomas by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Thomas: