I know that in the early 1800s there were enough John Adcocks in TN to populate the state.There were at least two that applied for a pension for service in the Rev. War.This is what I found concerning them:
#1John Adcock b. ca. 1754 Buckingham Co. VA.In his application he declared he was 65/66 years old and had a wife his second who was about 30 and that he was the father of 5 children 13-11/2 years of age. He said he enlisted on Feb. 14 1776 and was in Capt. Thomas Patterson Co. 6th Virginia Reg.He went to court 3 times before he received his penison of $8.00 a month under the acts of 1818 and 1820. The certificate #18533 issued Apr. 2 1822.It is believed that this is the father of Stinson, John, Edmond, William, Pat, Nancy, and Samuel C. Adcock by the first wife of John.All these children were born in VA. except Samuel C. who was born 1801(age from his tombstone) in Tn.
#2John A. Adcock b. Sep.10, 1758 Buckingham VA. He states that is his birth date and that he came to Tn from VA around 1822.He said he volunteered in Feb 1781 in Buckingham Co VA. in the company of Capt. Saunders in Reg. of Col Skipwith in the VA. Militia.He received $20.00 a year under Act of 1832 on Mar 9, 1835 Certificate #29841.
This infomation was found in Virginia Revolutionary Pension Applicaations Vol. Pgs 24-25
These two men have be confused as the same person by lots of us but I do think this proves that they are two different men.Sure hope this helps.Betty