b. 1 January 1822, d. 10 April 1916
| Birth* | Jacob Deem III was born on 1 January 1822 at Wood County, (W)VA. |
| (Living With Parents) Census | He appeared on the census of 1830 in the household of his parents Peter B Deem and Nancy Rollins at Wood County, (W)VA; Peter Deem head of household. Males under 5 years of age 1, males of 5 and under 10 2, males 10 and under 15 1, males 30 and under 40, females under 5 2, females of thirty and under 40.1  |
| Marriage* | Jacob Deem III married Catherine Fought, daughter of James Fought and Elizabeth Pribble, on 18 October 1843 at Wood County, (W)VA; Rev. Addison Hite. |
| Census* | Jacob Deem III and Catherine Fought appeared on the census of 1850 at District 65, Wood County, (W)VA; Jacob Deem 28 farmer, Catherine Deem 27, Lemuel Deem 6, Mary E Deem 3, John Deem 8/12.2  |
| Census | Jacob Deem III and Catherine Fought appeared on the census of 1860 at Bellville, Wood County, (W)VA; Jacob Deem 37 farmer, Catharine Deem 36, James L Deem 15 farm labor, Mary E Deem 13, Abigail Deem 8, Peter Deem 6, Nancy Deem 4, Sarah J Frizzelle 20 school teacher.3  |
| Census | Jacob Deem III and Catherine Fought appeared on the census of 1870 at Steele District, Wood County, WV; Jacob Deem 48 Farmer, Catherine Deem 47, Nancy Deem 14, Hiram Deem 16, Peter Deem 16, Martha Deem 10, Emma J Deem 5.4  |
| Death* | Jacob Deem III died on 10 April 1916 at Steele District, Wood County, WV, at age 94.5  |
| Burial* | He was buried on 12 April 1916 at Big Tygart Cemetery, Wood County, WV. |