MaleJohannes Siertsema |
| Birth | 4 Mar 1724 | Beerta, Groningen, Netherlands |
| Death | 10 Feb 1808 | Hoogezand, Groningen, Netherlands |
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| Marriage | 15 Aug 1759 | Nieuwolda, Groningen, Netherlands |
| Other Spouse | Anna Margaretha Sparringa | F1146 | |
| Marriage | 15 Sep 1751 | Wetsinge, Germany |
| Other Spouse | Fenna Adriani | F1102 | |
| Marriage | 11 Aug 1756 | Groningen, Groningen, Nederland |
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FemaleMargaretha Sypkens |
| Birth | 21 Dec 1738 | Eext, Drenthe, Netherland |
| Death | 14 Dec 1820 | Groningen, Groningen, Nederland |
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