| Hardtke, Emma Adeline Jakobine | Lange | Hardtke Emil Julius | 1953 |
| Hardtke, Friedrich | 1967 | ||
| Hardtke, Heinrich Albert | 1965 | ||
| Hardtke, Hermann Carl | 1958 | ||
| Hardtke, Hermann Maximilian | 1935 | ||
| Hardtke, Marie Bertha | Kleemeyer | Hardtke Hermann Carl | 1949 |
| Hardtke, Marie Dorothee | Streckfuß | Hardtke Hermann Maximilian | 1959 |
| Hardtke, Marie Meta Margarete | Clüver | Hardtke Karl Bernhard | 1975 |
| Hardtke, Olga Margarethe | Pankratz | Hardtke Wilhelm Friedrich | 1968 |
| Hardtke, Olof Robert | 1907 |