| Father | John Charles Fenhagen (1853 - 1900) |
| Mother | Mary F. "Marian"(Mollie) Cullison (1853 - 1910) |
| Sibling | James Henry (Harry) Fenhagen (1878 - 1951) |
| Sibling | Howard Fenhagen (1880 - ) |
| Sibling | Ada Elizabeth Fenhagen (1881 - 1955) |
| Sibling | Charlotte Gertrude Fenhagen (1883 - ) |
| Sibling | Laura Genevieve Fenhagen (1884 - ) |
| Sibling | Helen Cecilia Fenhagen (1885 - 1917) |
| Sibling | Mamie Fenhagen (1887 - ) |
| Sibling | George Howard Fenhagen (1887 - 1970) |
| Sibling | Blanche Louise Fenhagen (1889 - 1982) |
| Sibling | Anna W. "Annie" Fenhagen (1891 - 1984) |
| Sibling | Mary Edna Fenhagen (1893 - 1947) |
| Sibling | Mary Edna Fenhagen (1893 - 1918) |
| Sibling | Mary (Mamie) S. Fenhagen (1894 - 1947) |