| Portmann, Eduard Franz | 1894 | Bremen | |
| Portmann, Engel Louise Elise | 1904 | Bremen 1 | |
| Portmann, Engel Sophie Wilhelmine | 1915 | Bremen 1 | |
| Portmann, Herm. Friedr. Wilh. | 1911 | Bremen 1 | |
| Portmann, Louise Dorothee | 1930 | Bremen 1 | |
| Portmann, Luise Sophie Engel | 1901 | Bremen | |
| Portmann, Marie Margarethe | Ruröde | 1923 | Bremen 6 / 3 (Grambke) |
| Portmann, Sophie Margar. Louise | 1914 | Bremen 1 | |
| Portmann, Wilhelmine Sophie Luise | 1911 | Bremen 2 (Hastedt) |