Donald Wilson Oelker 1905–… | | |
| | William Crist Oelker 1886–1951 | | | | Johann Friedrich Christian Oelker 1846–1923 Sophie Doris Siemers 1854–1908 | | | | Johann Heinrich Christian Oelker 1808–1871 Johanna Marie Justine Augusta Klingenberg 1819–… | | | | Johann Hermann Heinrich Oelker 1771–1854 Engel Marie Catherine Jacobus 1777–1842 | | | | Johann Heinrich Oelker 1742–1810 Cathrine Marie Growen 1746–… | | |
| | | Ernst Friedrich Jacobus 1752–… Ilse Dorothea Wulf 1755–… |
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| | | Johann Peter Christoph Ferdinand Klingenberg 1784–… Johanna Friedrike Henriette Schaefer …–… | | | | Zacharias Klingenberg …–… |
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| | | Johann Heinrich Christian Siemers 1822–1908 Marie Elisabeth Hennig 1835–1920 | | | | Johann Christoph Heinrich Siemers 1790–1866 Margaret Elisabeth Bruggemann 1779–1841 | | | | Gerd Hinrich Bruggemann 1725–1785 Cathrine Adelheid Cramer 1737–… |
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| | | Johann Bernhard Hennig 1799–1852 Margrethe Sophie Elisabeth Appelhoff 1799–1869 | | | | Johann Heinrich Appelhoff 1757–1819 Marie Catharina Elisabeth Baete 1763–1814 | | |
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