| 1. | Leendert Gerrits van Muijen was born about 1730 in Schiedam; died in Jakarta, West-Java, Indonesië. Family/Spouse: Cornelia Meijer. Cornelia was born about 1767; died on 19 Oct 1830 in Poerworedjo, Midden-Java, Indonesië. [Group Sheet] [Family Chart]
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| 2. | Cornelia Elisabeth van Nuyen (Muijen) Cornelia married Jonkheer Nicolaas Anthonie Holmberg de Beckfelt about 1804. Nicolaas (son of Jonkheer Nicolas (Nils) Holmberg de Beckfelt and Josine Antoinette Adrienne van der Gon) was born on 1 Apr 1779 in Culemborg; died on 4 Mrt 1821 in Semarang, Midden-Java, Indonesië. [Group Sheet] [Family Chart]
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| 3. | Jonkheer Nicolaas Frederik Carel Holmberg de Beckfelt Nicolaas married Henriette Geertruida Godefrida Cannaarts on 6 May 1850 in Cheribon, West-Java, Indonesië. Henriette (daughter of Dominique Henricus Cannaarts and Loa Ga Nio) was born on 2 Jan 1832 in Bogor, West-Java, Indonesië; died on 26 Jul 1913 in Kuningan, West-Java, Indonesië; was buried in Tjigoegoer, West-Java, Indonesië. [Group Sheet] [Family Chart] Family/Spouse: Inyona (Innjo). [Group Sheet] [Family Chart]
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| 4. | Jonkvrouw Josina Antoinette Elisabeth Holmberg de Beckfelt Josina married Théodore Lucassen on 27 Aug 1821 in Rembang, Midden-Java, Indonesië. Théodore (son of Reijnerus Lucassen and Anna Gosina Lemen) was born on 3 Aug 1792 in Kleve, Duitsland; died on 31 Jan 1854 in Den Haag. [Group Sheet] [Family Chart]
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| 5. | Jonkheer Carel Holmberg de Beckfelt Carel married Maria Verbruggen on 6 Jul 1882 in Soerabaja, Oost-Java, Indonesië. Maria died on 23 Jul 1885. [Group Sheet] [Family Chart]
Carel married Frederika Charlotte Willemsen on 23 Sep 1886 in Tegal, Midden-Java, Indonesië. Frederika was born on 6 Mar 1862 in Tegal, Midden-Java, Indonesië; died on 11 Mar 1892 in Tegal, Midden-Java, Indonesië. [Group Sheet] [Family Chart] Family/Spouse: Marie Virgenie Willemsen. Marie (daughter of Herman Willemsen and Adèle Beaver) was born on 27 Aug 1858 in Tegal, Midden-Java, Indonesië. [Group Sheet] [Family Chart]
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| 6. | Johanna Henriëtte Lucassen |
| 7. | Théodore Reinier Nicolaas Lucassen |