| Name | Death date | Birth location | Marriage date | Age at death |
| Issac Griesemer | WFT Est. 1761-1850 | | | 1 est. |
| Iva Buck | | | | |
| Iva Farrot | | | | |
| Iva Farrot King | | | | |
| Iva Heintzman | | | | |
| Iva May Venia | | | | |
| Iva Meredith | | | | |
| Ivo Kramer | | | | |
| J Edward Paschall | Aft. 1900 | Dela, PA | | 1 est. |
| J Lee Kugler | | | | |
| J. Davis Adams | 1897 | | February 21, 1866 | 65 est. |
| J.B. Simms | | | | |
| Jack Betts | | | | |
| Jack Bischof | | | Private | |
| Jack Dallas BURDETT | | | | |
| Jack Fritscher | | | | |
| Jack Martin | | | | |
| Jackie | | | | |
| Jacob Andra | 1938 | | | ? |
| Jacob Binckele | WFT Est. 1768-1857 | | | 1 est. |
| Jacob Boyer | WFT Est. 1791-1880 | Northampton, Pa. | | 1 est. |
| Jacob Boyer | Abt. 1852 | Northampton, Pa. | | 69 est. |
| Jacob Clewell | July 10, 1803 | | | 0 |
| Jacob Conrade Ungerer | December 12, 1889 | Kleinhuningen, Basel, Switzerland | February 21, 1846 | 66 |
| Jacob Derrickson | | | April 13, 1871 | |
| Jacob Dohner | WFT Est. 1738-1799 | | WFT Est. 1738-1772 | 45 est. |
| Jacob Ehrenhardt | December 09, 1777 | | | 2 |
| Jacob Ehrenhardt | September 12, 1825 | Salisbury Twp, Lehigh, Pa. | October 13, 1822 | 64 |
| Jacob Ehrenhardt | WFT Est. 1792-1881 | Whitehall Twp, Lehigh, Pa. | | 1 est. |
| Jacob F. Giering | | | 1891 | |
| Jacob Fass | WFT Est. 1742-1835 | | | 5 est. |
| Jacob Fenstermacher | WFT Est. 1777-1837 | Pa. | WFT Est. 1777-1811 | 31 est. |
| Jacob Fenstermacher | July 19, 1835 | Longswamp Twp, Berks, Pa. | | 83 |
| Jacob Fenstermacher | WFT Est. 1784-1873 | Lehigh, Pa. | | 1 est. |
| Jacob Fenstermacher | Bef. 1806 | Longswamp Twp, Berks, Pa. | | 17 est. |
| Jacob Freiman | March 28, 1871 | Lower Saucon Twp, Northampton, Pa. | | 78 |
| Jacob Friess | WFT Est. 1795-1884 | | | 1 est. |
| Jacob Fritz | 1842 | Berks, Pa. | | 74 est. |
| Jacob Fritz | March 29, 1924 | Ryan Twp, Schuylkill, Pa. | 1870 | 77 est. |
| Jacob Fry | | | | |
| Jacob Giering | March 13, 1927 | Dornstetten, Wurttemburg, Germany | May 10, 1873 | 80 |
| Jacob Girardin | | | | |
| Jacob Gunckel | WFT Est. 1797-1845 | Berks, Pa. | WFT Est. 1784-1818 | 44 est. |
| Jacob Gunckel | WFT Est. 1801-1890 | Pa. | | 1 est. |
| Jacob Hack | January 26, 1829 | Pa. | WFT Est. 1775-1808 | 84 |
| Jacob Hack | September 30, 1823 | | | 50 |
| Jacob Hauser | 1807 | Alsace, Germany | January 11, 1745/46 | 87 est. |
| Jacob Hauser | June 26, 1806 | Skippack Twp, Montgomery, Pa. | July 19, 1762 | 72 |
| Jacob Hauser | October 09, 1823 | Bethania, Forsyth, North Carolina | | 58 |
| Jacob Hauser | July 27, 1783 | Bethania, Forsyth, North Carolina | | 22 |