| Father | Peter John Caspers (1887 - 1963) |
| Mother | Elizabeth Catherine Primus (1896 - 1970) |
| Sibling | Celestine "Sr. Adeline OSB" Caspers (1921 - 2004) |
| Sibling | Anthony John Caspers (1923 - 1982) |
| Sibling | Edwin Joseph Caspers |
| Sibling | Urban William Caspers (1927 - 2001) |
| Sibling | Marie Magdalene Caspers |
| Sibling | Theresa Rose Caspers (1931 - 1992) |
| Sibling | Elmer Bernard Caspers (1935 - 1988) |
| Sibling | Robert Leander Caspers (1936 - 1989) |
| Sibling | Joseph Leo Caspers |
| Sibling | Lorraine Susan Caspers |
| Sibling | Anna Theresa Caspers |
| Sibling | Bernice A. Caspers (1941 - 1989) |
| Sibling | Elizabeth OSB Caspers (1943 - ) |