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| Father | Male Friedrich Wilhelm Demke |
| Born | 22 Jul 1887 | Koenigsberg Stadt,Ostpreussen,East Prussia, Germany |
| Died | 2 Aug 1970 | |
| Buried | ||
| Married | 31 Dec 1911 | Rothenstein, Koenigsberg, East Prussia, Germany |
| Father | Johann Heinrich August Demke | F6 Group Sheet | |
| Mother | Henriette Friederike Ernestine Auguste Godau | F6 Group Sheet | |
| Mother | Female Anna Bertha Klang |
| Born | Abt 1885 | Rothenstein, Koenigsberg, East Prussia, Germany |
| Died | ||
| Buried | ||
| Father | ||
| Mother | ||