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| Name | Johann Heinrich Demke | |
| Born | 20 Jan 1854 | Neuhausen, Konigsberg, East Prussia, Germany |
| Gender | Male | |
| Person ID | I132 | Stevens-English |
| Last Modified | 12 Mar 2015 | |
| Father | Johann Gottlieb Demke, b. 7 May 1821, Thiemsdorf, Königsberg, East Prussia, Germany | |
| Mother | Wilhelmine Henriette Magadelina Kuhr, b. 22 Oct 1828, Neuhausen, Konigsberg, East Prussia, Germany | |
| Married | 9 Apr 1849 | Neuhausen, Konigsberg, East Prussia, Germany |
| Family ID | F20 | Group Sheet | Family Chart |