| Name | Birth date | Death date |
| Postlethwait, Alice Irene | February 01, 1911 | September 17, 1941 |
| Postlethwait, Amos | May 20, 1839 | Unknown |
| Postlethwait, Andrew | Private | |
| Postlethwait, Andrew | Abt. 1844 | Unknown |
| Postlethwait, Andrew Jackson | October 22, 1854 | March 14, 1905 |
| Postlethwait, Ann | Abt. 1794 | Unknown |
| Postlethwait, Anne Elizabeth | March 24, 1881 | January 17, 1912 |
| Postlethwait, Arles Luther | June 23, 1899 | March 30, 1934 |
| Postlethwait, Arlis | Private | |
| Postlethwait, Arnie Sherrell | Abt. 1913 | March 10, 1978 |
| Postlethwait, Austa | January 29, 1897 | October 1974 |
| Postlethwait, Austin | Private | |
| Postlethwait, Barbara | Private | |
| Postlethwait, Barney | | Unknown |
| Postlethwait, Bertha | March 24, 1899 | April 06, 1902 |
| Postlethwait, Bertie | Unknown | Unknown |
| Postlethwait, Bessie | December 07, 1886 | November 11, 1970 |
| Postlethwait, Bessie Mary | February 16, 1915 | June 17, 1984 |
| Postlethwait, Betty Lou | Private | |
| Postlethwait, Blanche | Private | |
| Postlethwait, Bose | Abt. 1837 | Unknown |
| Postlethwait, Calvin | Unknown | Unknown |
| Postlethwait, Carl Bismarkl | November 23, 1907 | February 1991 |
| Postlethwait, Cassandra | 1822 | Abt. 1870 |
| Postlethwait, Catherine | Abt. 1863 | February 22, 1887 |
| Postlethwait, Catherine | 1733 | Unknown |
| Postlethwait, Catherine | Abt. 1820 | Unknown |
| Postlethwait, Charles | Abt. 1875 | Unknown |
| Postlethwait, Charles | Abt. 1875 | Unknown |
| Postlethwait, Charles | Abt. 1875 | Unknown |
| Postlethwait, Charles | Unknown | Unknown |
| Postlethwait, Charles | Unknown | Unknown |
| Postlethwait, Charles L. | November 06, 1861 | Unknown |
| Postlethwait, Charles Nelson | Private | |
| Postlethwait, Charles Nelson | Abt. 1873 | May 29, 1953 |
| Postlethwait, Chester | January 14, 1914 | January 21, 1914 |
| Postlethwait, Clarence Holand | August 21, 1915 | October 1915 |
| Postlethwait, Claude Howard | Private | |
| Postlethwait, Claude Pete | Private | |
| Postlethwait, Coy | August 01, 1910 | February 18, 2001 |
| Postlethwait, Coy Lee | Private | |
| Postlethwait, Dale Willard | March 25, 1916 | September 1955 |
| Postlethwait, Dale Willard | 1939 | February 1999 |
| Postlethwait, David | 1836 | Unknown |
| Postlethwait, David Alaxander | December 17, 1828 | Unknown |
| Postlethwait, David Porter | August 16, 1873 | December 29, 1954 |
| Postlethwait, Della | January 01, 1907 | June 16, 1917 |
| Postlethwait, Dewey Curtis | April 29, 1899 | April 29, 1986 |
| Postlethwait, Docia | Private | |
| Postlethwait, Donald Ralph | Private | |