| | Ralph Edward Gromm 1898–1988 Marie Doris Briggs 1896–1962 Agatha B (Aggie) Schmitt 1907–2000 | | | | Friedrich Wilhelm Gromm 1849–1924 Luise Anna Secor 1868–1953 | | | | Friedrich Wilhelm Gromm 1819–1887 Anna Dorothea Breyer 1818–1882 | | | | Martin Friedrich Gromm 1772–1832 Marie Elisabeth Richter –1856 | | |
| | | Gottfried (Ernst) Breyer 1771–1840 Anna Regina Lehmann –1842 | | |
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| | | Martin Mathias Secor 1841–1911 |
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