I found a record on rootsweb that has John Johnson, dob 1829 whose parents were Levi [dob 1808, GA] and Elizabeth, [dob abt 1812]. Levi's parents were Samson and Martha Johnson. They had a son John Johnson, dob 1857. Other siblings were Sarah Ann, dob 1827, Thomas Co., Ga; Mary Ann Johnson, dob 1828, Thomas Co., GA; Morgan Johnson, dob 1832, GA; Jonas Johnson, dob 1834; Margaret Johnson, dob 1834; Ladonia Johnson, dob 19 Jan 1838, Thomas Co., GA; Elizabeth Johnson, dob 1841; Mary Johnson, dob 1844; Thomas Johnson, dob 1848, GA; Sarah L. Johnson, dob 1851, GA; Margaret A. Johnson, dob 1853. Samson Johnson was born abt 1768 in SC. There is more if you are interested.