| Name | Birth date | Death date | Spouse | Marriage date |
|---|
| Smithson, Larry Ray | Private | | | |
| Smithson, Laura Jean | Private | | Hovis, John Milton | Private |
| Smithson, Laura Wayne | Private | | | |
| Smithson, Leland Denny "Lee" | Private | | Rinker, Jeanette Catherine | Private |
| Smithson, Leland John | Private | | De Shon, Peggy | Private |
| Smithson, Leonard John | Private | | Schuhardt, Mary Helen | Private |
| Smithson, Leslie Blyth | Private | | | |
| Smithson, Levie Louise | Private | | | |
| Smithson, Linda Karen | Private | | Jentz, Jerome | Private |
| Smithson, Linda Lou | Private | | Schudel | Private |
| Smithson, Lisa Kay | Private | | Mollitor, Kenneth Lewis | Private |
| Smithson, Lloyd | | Unknown | | |
| Smithson, Louisa | 1841 | Unknown | | |
| Smithson, Louisa Louise | Bet. 1802 - 1803 | Bef. 1850 | Smithson, Sylvanus Wright | May 10, 1821 |
| Smithson, Louise | | Unknown | | |
| Smithson, Louise | Private | | | |
| Smithson, Lusinda | Abt. 1875 | Unknown | | |
| Smithson, Lyle Cramer | Private | | Denny, Pauline Isabel "Polly" | Private |
| Smithson, Marcia Gale | Private | | | |
| Smithson, Margaret | Private | | Hager, Trice | Private |
| Smithson, Mariana | March 06, 1882 | October 18, 1925 | | |
| Smithson, Marie Elsie | Private | | Peters, Lloyd | Private |
| Smithson, Marjorie Carolyn | Private | | Cook, Ellis Jordan | Private |
| Smithson, Marjorie Jean | Private | | Parlee, Brady Densmore | Private |
| Smithson, Mark | Private | | | |
| Smithson, Marson Anson | | Unknown | | |
| Smithson, Martha | | Unknown | Vaden, William H. | December 14, 1832 |
| Smithson, Martha | Abt. 1824 | Unknown | | |
| Smithson, Martha | 1833 | March 19, 1839 | | |
| Smithson, Martha Elizabeth | Private | | | |
| Smithson, Martha F. | Bet. 1834 - 1840 | Unknown | | |
| Smithson, Martha Surelda | | Unknown | Summers, John R | |
| Smithson, Mary A. | 1837 | Unknown | | |
| Smithson, Mary Blanche | Abt. 1925 | 1960 | O'Connell | Private |
| Smithson, Mary E | | Unknown | King, Henry | |
| Smithson, Mary E. | 1843 | Unknown | | |
| Smithson, Mary Elizabeth | Private | | White, Charles Herbert | Private |
| Smithson, Mary Elizabeth | Private | | | |
| Smithson, Mary Ellen | Private | | Conwell, Homer | Private |
| Smithson, Mary Francis | Private | | | |
| Smithson, Mary Jane | | Unknown | | |
| Smithson, Mary Kathryn | Private | | Wilson, Albert A. | Private |
| Smithson, Mary Lillian | Private | | | |
| Smithson, Mary Lou | Private | | Gugler, Edward Otto | Private |
| Smithson, Mary Lou | Private | | King, Russell Dean | Private |
| Smithson, Mary Ola | Private | | Bacon, Samuel Arthur | Private |
| Smithson, Mary Patricia "Pat" | Private | | Leathers, Robert Dale | Private |
| Smithson, Masoni Julia Belle | | Unknown | | |
| Smithson, Matthew Wesley | Private | | | |
| Smithson, Mattie | 1901 | Unknown | | |