Johannes Friedrich Heckmann 1877– | | |
| | Katharine Elise Heckmann 1906–1974 Karl Heinrich Sippel 1897–1949 | | |
| | Anna Emilie Heckmann 1911–1977 | | |
| | Johannes Georg 2. Kind Heckmann 1878–1946 Anna Elise Beck 1881–1956 | | |
Anna Elise 3. Kind Heckmann 1881–1962 | | |
| | Anna Elisabeth Sippel 1852– Hans Henrich Heckmann 1844–1912 | | |