1. | Johannes Coenraads de Graaf was born about 1864 in Leeuwarden, FR, NLD. Johannes married Trijntje Johannes Lubach on 21 Jan 1888 in Leeuwarden, FR, NLD. Trijntje (daughter of Johannes Dirks Lubach and Susanna Martens van der Heide) was born about 1865 in Leeuwarden, FR, NLD. [Group Sheet] [Family Chart]
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2. | Trijntje Johannes de Graaf (1.Johannes1) was born on 25 Apr 1898 in Leeuwarden, FR, NLD. Trijntje married Bote Johannes Folkertsma on 03 Aug 1918 in Leeuwarden, FR, NLD. Bote (son of Johannes Folkertsma and Janke Wijtzes van Dijk) was born on 12 May 1896 in Marrum, Ferwerderadeel, FR, NLD. [Group Sheet] [Family Chart]
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3. | J.B. Folkertsma (2.Trijntje2, 1.Johannes1) |
4. | J.B. Folkertsma (2.Trijntje2, 1.Johannes1) |