| Branch | Birth | Death | Name | Spouse |
| 50 | 1914 | Ian MacIntosh (20) | Francis Fowler | |
| 9 | 1848 | Iantha (67) | Samuel Black | |
| 17 | 1905 | 1976 | Icy May (166) | Ocie Smith |
| 17 | 1905 | 1976 | Icy May (166) | Okey H. Nicholson |
| 13 | 1874 | Ida (110) | Edward Mitchell | |
| 13 | Ida (221) | |||
| 29 | Ida (95) | |||
| 13 | Ida (98) | |||
| 31 | 1861 | Ida Belle (57) | Lemuel P. Padget | |
| 3 | 1913 | Ida Belle Inez (510) | ||
| 12 | 1834 | 1859 | Ida Eliza (41) | |
| Note 3 | 1899 | 1988 | Ida Gertrude (30) | Garven Starnes |
| 45 | 1856 | 1932 | Ida Josephine (48) | Clarence Linsey Hagerty |
| 9 | 1903 | Ida Marie (112) | Troy Reed | |
| 4 | 1859 | Ida May (132) | Frank Liddle | |
| 43 | 1870 | 1964 | Ida May (23) | Francis Alonzo Oloffson |
| 28 | 1874 | 1959 | Ida Olivia (56) | Volney Wheeler |
| 29 | Ida Temperance (9) | |||
| 1 | Idel (342) | |||
| 16 | 1932 | Ila Lillbell (130) | Mr. Kelly | |
| 6 | Ilga (111) | |||
| 1 | 1920 | Ina Catherine (387) | Richard Charles Strasser | |
| 15 | Ina M. (98) | Mr. Hagel | ||
| 43 | 1817 | Indiana (75) | Mr. Hughes | |
| 7 | Inez (278) | |||
| 43 | 1912 | Inez Ilene (64) | ||
| 3 | 1915 | Inez May (527) | ||
| 51 | 1889 | Ira (30) | ||
| 1 | 1850 | Ira Adam (46) | Elizabeth W. Snyder | |
| 1 | 1878 | Ira Poe (266) | ||
| 6 | 1910 | Irene (126) | ||
| 4 | 1851 | Irene (136) | Samuel Cox | |
| Note 3 | 1905 | 1972 | Irene (32) | Roy Craven |
| 11 | 1918 | Irene (35) | ||
| 31 | 1864 | Irene (63) | James Gartner | |
| 49 | 1879 | Iris (14) | Mr. Roderwald | |
| 6 | Iris (148) | |||
| 6 | 1888 | Iris (34) | Ruth Copeland | |
| 1 | Iris (343) | |||
| 6 | 1914 | Iris Modene (156) | ||
| 1 | 1855 | Irvin I. (55) | Sarah J. --- | |
| 1 | 1913 | Irvin Robert (382) | ||
| 16 | Irving (81) | |||
| 43 | 1786 | Isaac (1) | Sarah Sparks | |
| 29 | 1813 | 1896 | Isaac (10) | Nancy Welch |
| 1 | Isaac (50) | Rose Kiser | ||
| 29 | Isaac (85) | |||
| 4 | 1796 | 1892 | Isaac Shultz (9) | Polly Reed Ford |
| 1 | Isabel (168) | Reader J. Meroney | ||
| Note U | 1851 | Isabel (2) | ||
| 3 | Isabella (14) | John Hanawalt | ||
| 12 | Isabella (22) | William Jack | ||
| 13 | 1887 | Isabella (364) | ||
| 13 | 1897 | Isabella C. (367) | ||
| 3 | 1875 | Isabella Graham (285) | ||
| 3 | 1892 | Isabella S. (453) | ||
| 1 | 1849 | 1874 | Isabelle (138) | James Wilson |
| 1 | 1873 | Isabelle (253) | David W. Stewart | |
| 16 | Isabelle (26) | Peter McKenna | ||
| 16 | 1852 | 1905 | Isabelle (28) | |
| 3 | 1843 | 1904 | Isabelle (308) | Daniel W. Overholt |
| 3 | Isabelle (322) | Chauncey H. Litchfield | ||
| 16 | 1889 | 1934 | Isabelle (38) | Frank Williams |
| 1 | 1829 | Isabelle Elizabeth (156) | Henry B. Hulvey | |
| 3 | 1847 | Isabelle F. (227) | Stephen Davis | |
| 1 | 1828 | 1850 | Isabelle I. (131) | |
| 3 | 1866 | 1929 | Issa Ellen (334) | |
| Note G | Issac (1) | Martha Minor | ||
| 4 | 1823 | 1834 | Issac Allen (111) | |
| 9 | 1902 | Iva (151) | Mr. Hough | |
| 3 | 1881 | 1899 | Iva (466) | |
| 7 | 1877 | Iva Ann (168) | David Samuel Walker | |
| Note M | Ivan C. (3) | |||
| 50 | 1918 | 1983 | Ivan McLaren (21) | Hazel Mary Chappell |
| 29 | 1903 | Ivor Calvin (142) | ||
| 17 | 1889 | 1956 | Ivy Myrtle (159) | James Taylor Prunty |
| 17 | 1889 | 1956 | Ivy Myrtle (159) | Austin Miller Moore |
| 16 | 1931 | Izola Chrysortheumen (76) | Stanley E. Mottershead | |