1. | Klaas Cornelis de Groot Family/Spouse: Maartje Jans Plat. Maartje (daughter of Jan Lazes Plat and Jannigje Wijbrens) was born on 15 Mar 1789 in St. Jacobiparochie, Het Bildt, FR, NLD; died on 21 Oct 1854 in no. 6, St. Annaparochie, Het Bildt, FR, NLD. [Group Sheet] [Family Chart] Children:
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