| Birthdate: | |
| Birthplace: | Ugartsthal |
| Death: | Died |
| Managed by: | Włodzimierz Macewicz |
| Last Updated: | |
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Immediate Family
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mother -
father -
brother
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sister
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brother
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sister
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sister
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Jan Krzysztof Steffen's Timeline
| 1803 |
August 5, 1803
Age 2
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| 1800 |
December 12, 1800
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Ugartsthal
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