
| 1. | Elena Alexandrovna NK was born about 1888; died before 1998. Family/Spouse: Sergey Ottovich Rosentreter. Sergey (son of Otto Wilhelm Rosentreter and Fanny Bartelt) was born in 1888 in Moscow, Russia; died in 1936 in Moscow, Russia. [Group Sheet] [Family Chart]
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| 2. | Valery Sergeyevich Rosentreter |