| Forthmann, Anna Magdalene Christine | 1938 | Bremen 1 | |
| Forthmann, Anna Marie Dorothee | 1901 | Bremen | |
| Forthmann, Charlotte Martha Marie | 1942 | Bremen-Mitte | |
| Förthmann, Frieda Sophie Marie | 1940 | Bremen-Mitte | |
| Forthmann, Joh. Herm. Heinr. | 1888 | Bremen | |
| Forthmann, Johann Hermann Christian | 1920 | Grambke, Bremen 6 (Grambke) | |
| Forthmann, Johannes Peter | 1898 | Bremen | |
| Forthmann, Thea Meta Lina | 1935 | Bremen 1 | |
| Forthmann, Theod. Christ. n | 1911 | Bremen 1 | |
| Förthmann, Wilhelm Heinrich Carl | 1922 | Bremen 1 |