| Kastein, Hans Arnold Friedr. | Frentzel | 1901 | Bremen |
| Kastein, Heinrich Wilh. Jul. Emil | Frentzel | 1896 | Bremen |
| Kastein, Ida Louise Emilia | Frentzel | 1894 | Bremen |
| Kastein, Jul. Wilh. Heinrich Emil | Frentzel | 1900 | Bremen |
| Kastein, Karl Berthold Wilhelm | Frentzel | 1906 | Bremen 1 |
| Kastein, Karola Johanna Nikolina | Frentzel | 1904 | Bremen 1 |
| Kastein, Lilly Helena Elisab. | Frentzel | 1897 | Bremen |