E. Strutz, Deutsches Geschlechterbuch 130, Limburg/Lahn 1962, S. 358
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Giesbert Wilhelm HARTWECK | __
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|--Ferdinand Heinrich HARTWECK
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| Johann Albert ISENBECK | __
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| Clara Katharina ISENBECK | __
(1772-....)x1799 | |
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| Katharina Elisabeth CRÄMER | __
x1770 | |
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