| DNA* | | From DNA and genealogical evidence we conclude that John Oliver Culpepper is a descendant of James Culpepper, Jr., of Darlington Co., SC, and that James Jr. is a grandson on Robert Culpepper, Jr. and 2-great-grandson of Henry Culpepper of Lower Norfolk, VA. |
| Birth* | 16 Mar 1816 | John was born at Darlington District, South Carolina, on 16 Mar 1816. |
| | He was the son of James Culpepper Jr., of Darlington, SC and Elizabeth (?). |
| 1820 Census | 7 Aug 1820 | James and John was probably a free white male, age under 10, in James Culpepper Jr., of Darlington, SC's household, on the 1820 Census at Darlington District, South Carolina. Unaccounted for are 2 females 0-10..1 |
| 1830 Census | 1 Jun 1830 | John was probably a free white male, age 10 and under 15, in James Culpepper Jr., of Darlington, SC's household, on the 1830 Census at Darlington District, South Carolina. Unaccounted for are 1 M15-20, 1 F5-10, 1 F10-15 and 1 F15-20..2 |
| 1840 Census | 1 Jun 1840 | John was probably a free white male, age 20 and under 30, in Elizabeth (?)'s household, on the 1840 Census on 1 Jun 1840 at Darlington District, South Carolina. (Unaccounted for are 1 F15-20 and 1 F20-30.).3 |
| 1850 Census* | 1850 | John was listed as the head of a family on the 1850 Census in 1850 at Russell Co., Alabama. |
| Marriage* | 25 Aug 1850 | He married Elizabeth Jane Campbell at Russell Co., Alabama, on 25 Aug 1850. |
| Death* | 1878 | He died in 1878. |
| Research note* | 22 Sep 2007 | Decendants of James H. Culpepper and John Oliver Culpepper have identical 37-marker DNA Haplotypes and thus James and John are quite closely related, if not brothers. Also, DNA points to their probably being descendants of Benjamin Culpepper of Edgecombe Co., NC (1698 - c1746), and not of James Culpepper of Nash Co., NC as had earlier been speculated.4 |