| Father | John W. Nichols Sr (1841 - 1911) |
| Mother | Arminta "Minta" Edgin (1841 - 1897) |
| Sibling | Martha Nichols (1858 - 1868) |
| Sibling | Sarah Nichols (1860 - 1868) |
| Sibling | Margaret Nichols (1864 - 1929) |
| Sibling | Lou Ellen "Lou Ella" Nichols (1867 - 1950) |
| Sibling | Mary Nichols (1869 - 1900) |
| Sibling | Thomas F. Nichols (1870 - 1944) |
| Sibling | Elizabeth "Lizzie" Nichols (1871 - ) |
| Sibling | David Nichols (1872 - ) |
| Sibling | John Larkin Nichols Jr (1873 - 1946) |
| Sibling | Andrew Nichols (1876 - ) |
| Sibling | Wallace Nichols (1877 - 1950) |
| Sibling | Rufus Nichols (1882 - 1963) |