| Father | Henry BOFENKAMP (1856 - 1942) |
| Mother | Mary HOHN (1864 - 1929) |
| Sibling | William Henry "Carpenter Bill" BOFENKAMP (1886 - 1969) |
| Sibling | Anna Maria "Ann" BOFENKAMP (1888 - 1983) |
| Sibling | Joseph Ferdinand BOFENKAMP (1890 - 1917) |
| Sibling | Victor BOFENKAMP (1892 - ) |
| Sibling | Madelaine "Lena" BOFENKAMP (1894 - 1968) |
| Sibling | Clara L. BOFENKAMP (1896 - 1982) |
| Sibling | Julius "Jule" BOFENKAMP (1898 - 1986) |
| Sibling | Walter J. "Walt" BOFENKAMP (1899 - 1958) |
| Sibling | Florence BOFENKAMP (1902 - 1990) |
| Sibling | Helen Marie BOFENKAMP (1905 - 1993) |
| Sibling | Alfred John "Freddie" BOFENKAMP (1907 - 1978) |