Katharina Elisabeth Martha Helene Sietz 1921–1999 | | |
| | Erich August Gustav Sietz 1889–1960 Wilhelmine Rebecca Thießen 1889–1967 | | |
Arthur August Gustav Johann Sietz 1891–1891 | | |
Irma Helene Augusta Sietz 1894–1895 | | |
| | Albert Ferdinand Oscar Sietz 1857–1897 Helene Gertrude Pauline Groddeck 1869–1943 Emma Ida Adelheid Donnerstag 1864–1888 | | |
| | August Ferdinand Sietz 1809–1875 | | | | Charlotte Lovisa Brickmann 1775–1861 | | | | Anna Renata Podewils 1747–1804 | | |
| | | Johann Erdmann Brickmann – Dorothea Elisabeth Drawe – |
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