Individual Details
Sylvester Hollenkamp
( - )
Families
| Spouse | Annette Butkowski |
| Father | Joseph Hollenkamp (1900 - 1965) |
| Mother | Bernadine Scherping (1903 - 1952) |
| Sibling | Virgil Joseph Hollenkamp (1926 - 2003) |
| Sibling | Leander "Dick" Hollenkamp |
| Sibling | Ronald Hollenkamp |
| Sibling | Marian Hollenkamp (1936 - 2006) |