M, b. August 1839, d. 21 April 1916
| Birth* | Aug 1839 | James was born at Green Sulphur Springs, Greenbrier Co, VA, in Aug 1839.1,2 |
| | He was the son of Charles Duncan and Cassie Alderson. |
| Census* | 1850 | He was listed as a resident in the census report at Greenbrier Co, VA, in 1850. |
| (Witness) Census | 27 Jul 1860 | James A. 'Jim Curly' Duncan appeared on the census of 27 Jul 1860 in the household of Charles Duncan and Cassie Alderson at District 2, Greenbrier Co, VA.3 |
| Marriage* | c 1864 | He married Frances Isabelle "Fannie" Upton at WV c 1864.4 |
| Employment* | Aug 1870 | Occupation: farmer in Aug 1870 at Blue Sulphur Twp, Greenbrier Co, WV.3 |
| Census* | 27 Aug 1870 | A census listed James as head of household at Blue Sulphur Twp, Greenbrier Co, WV, on 27 Aug 1870.3 |
| Employment | Jun 1880 | Occupation: farmer in Jun 1880 at Green Sulphur Dist, Summers Co, WV.3 |
| Census | 25 Jun 1880 | A census listed James as head of household at Green Sulphur Dist, Summers Co, WV, on 25 Jun 1880.3 |
| Employment | Jun 1900 | Occupation: farmer in Jun 1900 at Green Sulphur Dist, Summers Co, WV.3 |
| Census | 14 Jun 1900 | A census listed James as head of household at Green Sulphur Dist, Summers Co, WV, on 14 Jun 1900.3 |
| Employment | May 1910 | Occupation: farmer in May 1910 at Green Sulphur Dist, Greenbrier Co, WV.3 |
| Census | 2 May 1910 | A census listed James as head of household at Green Sulphur Dist, Greenbrier Co, WV, on 2 May 1910.3 |
| Death* | 21 Apr 1916 | James died on 21 Apr 1916 at Summers Co, WV, at age 76.5 |
| Burial* | | His body was interred at Green Sulphur Springs, Summers Co, WV, at Halidon Cemetery. |