1. | Sipke Karels Posma Family/Spouse: Reinhard Avontuur. [Group Sheet] [Family Chart]
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2. | Johannes Avontuur ![]() Family/Spouse: Aaltje Roelfs van der Veen. Aaltje (daughter of Roelf Jans van der Veen and Roelfien Jans Meijer) was born on 16 Jun 1809 in Zuidbroek. [Group Sheet] [Family Chart]
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3. | Kornelia Avontuur ![]() Family/Spouse: Henricus de Haan. Henricus (son of Derk de Haan and Hendrika Liefting) was born on 5 Jan 1841 in 's-Hertogenbosch; died on 13 Feb 1893 in Arnhem. [Group Sheet] [Family Chart]
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4. | Henderika Cornelia Alida de Haan ![]() |
5. | Everdina Sophia de Haan ![]() |
6. | Cornelia Geertruida de Haan ![]() |
7. | Derk Johannes Lodevicus de Haan ![]() |
8. | Sophia Geertruida de Haan ![]() |
9. | Sophia Geertruida de Haan ![]() Sophia married Laurens Martinus Siliakus on 18 Mar 1903 in Arnhem. Laurens (son of Laurens Martinus Siliakus and Maria Anna Rozemulder) was born on 17 Mar 1877 in Den Haag. [Group Sheet] [Family Chart]
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10. | Everdina Sophia de Haan ![]() |
11. | Franciscus Johannes de Haan ![]() |
12. | Louisa Johanna Bertha de Haan ![]() |