| Preetz, Anna Frieda | Röben | 1973 | Bremen-Mitte |
| Preetz, Anna Maria (gent. Martha) | Gäde | 1900 | Bremen |
| Preetz, Friedrich Wilhelm August | 1966 | Bremen-Mitte | |
| Preetz, Gesine Marie | Meyer | 1950 | Bremen-Mitte |
| Preetz, Maria | Janker | 1916 | Bremen 1 |
| Preetz, Marie Dorothea Amalie Frieda Elisabeth | Dick | 1976 | Bremen-Vegesack |
| Preetz, Martha Wanda | Sauer | 1969 | Bremen-Mitte |
| Preetz, Robert Albert August | 1948 | Bremen-Mitte | |
| Preetz, Wilhelm | 1900 | Bremen |