Note: This is not a surname I am researching. I wanted to post the info in case someone needed it to locate "lost" family members. The Adcock line listed here was in Rockingham NC at the time yours were. I have no other info, just what I have posted.
Check the pages I added links for; this is a wonderful site for locating lost ancestors, since many went through TN when migrating.
Death Notices from The Christian Avocate, Nashville, TN 1877-1879
May 10, 1879
Rev. George M. Williams son of: George B. and Nancy A. Williams; born Alexandria, Va., July 30, 1807; died Alcorn Co., Miss., Mar. 15, 1879; Moved to Rockingham, North Carolina 1826;
Married Sarah S. ADCOCK, Jan. 13, 1831; moved to DeSoto Co., Miss. 1838 and in 1840 to Shelby Co., Tenn.; licensed to preach, Methodist Church, 1835; ordained deacon 1841; ordained elder 1846; moved in 1849 to McNairy Co., Tenn., thence to Alcorn Co., Miss. ==