C. Pick, Familienbuch Lennep 1654-1809, Plaidt 2014, S. 219
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Engelbert BERTRAM | __
| (....-1661)x1637 | |
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Peter BERTRAM | __
| (1637-1712)x1661 | |
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| | N. | __
| x1637 | |
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|--Peter BERTRAM
| (1666-1741)x1726 __
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| Engelbert HASSELKUS | __
| | (....-1667)x1635 | |
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| Margaretha HASSELKUS | __
(1635-1682)x1661 | |
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| N. | __
x1635 | |
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