| 1. | Johanna Hendrika Jansen was born on 12 Apr 1864 in Amsterdam; died on 5 Dec 1947 in Amsterdam. Family/Spouse: Willem Karel Frederik Coersen. Willem died on 28 Jun 1897 in Amsterdam. [Group Sheet] [Family Chart]
Johanna married Cornelis Bosman on 31 Jul 1902 in Amsterdam. Cornelis was born on 18 Apr 1863 in Edam; died on 7 Jan 1934 in Amsterdam. [Group Sheet] [Family Chart]
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| 2. | Willem Karel Frederik Coersen |
| 3. | Ida Coersen |
| 4. | Gerhard Coersen |
| 5. | Wilhelmina Coersen |
| 6. | Janna Christina Coersen Janna married Cornelis Pieter Meijning on 14 May 1914 in Amsterdam. Cornelis (son of Cornelis Meijning and Klara Geertruida Hooft) was born on 6 Jun 1888 in Amsterdam; died on 1 Jul 1949 in Beek. [Group Sheet] [Family Chart]
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| 7. | Hendrik Jacob Coersen |
| 8. | Cornelia Johanna Bosman |
| 9. | Cornelis Bosman |
| 10. | Cornelis Pieter Meijning Cornelis married Marie Dekker on 29 May 1941 (Civil) in Amsterdam. Marie (daughter of Cornelis Dekker and Hendriekje van Harten) was born on 17 Aug 1917 in Weesperkarspel; died on 5 Apr 2017 in Amsterdam. [Group Sheet] [Family Chart]
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| 11. | Family/Spouse: Hans Peter Umlandt. [Group Sheet] [Family Chart]
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| 12. | Pieter Cornelis Umlandt |