A. Blömer, Die Vorfahren der Johanna Margarethe Schröders, Mönchengladbach 1991, S. 23
A. Blömer, Familien Seyben oder Sieben aus Beckrath, Mönchengladbach 1993, S. 33
♥ = Vorfahren ___________________
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♥ Diedrich KORSTEN | ___________________
| (1580-1637)x1610 | |
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Johann ZIMMERMANN | ___________________
| (1610-1658)x1636 | |
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| |♥ Anna | ___________________
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|--Adam ZIMMERMANN
| (1643-1710)x1678 Jakob SIEBEN >
| | (1520-1571)x1545
| Johannes SIEBEN | Guetgen
| | (1555-1608)x1585
| Adam SIEBEN | ___________________
| | (1585-1636)x1615 | |
| | | N. |___________________
| | x1585
| Margaretha SIEBEN | ___________________
(1615-1677)x1636 | |
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| Katharina HOSTER | ___________________
(....-1636)x1615 | |
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