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| * | 05.06.1861 | Hannover, Lower Saxony, Germany |
| † | 26.12.1910 | Berlin, Germany |
| father: | Otto Gercke, * 23.04.1825 Göttingen, † 17.02.1887 Berlin |
| mother: | Charlotte Wilmanns, * 14.06.1834 Vegesack, † 23.11.1929 Göttingen |