I'm looking through my records and found a Nancy b. Dec. 28, 1763 d. ? who was daughter of James Adams Sr. and Cecily Ford. They also had a son named John b. 1761 d. 1821. James Sr. was son of Robert & Mourning (Lewis) Adams.They also had a great grandson named John Madison b. 1812 d. ? He was their grandson, William H. Adams b. 1778 d. 1854. William was the first Adams in this line to move to Elbert Co. GA and followed by his father, James Adams Jr. b. Oct. 10, 1753 d. 1835. William also had a daughter, Nancy b. 1829 d. ? by his second wife, Sarah Head. John Madison Adams mother was Catherine Mansfield, the first wife of William H. Adams. This is probably too confusing. Your Nancy and John are probably children of other sons and daughters to these ancestors. Please give me more specifics as to parents, etc. We should be able to develop a pedigree chart that will be helpful for you. Have a great day!