Annette Louise Louwerse – | | |
Marianne Hillegonda Louwerse – | | |
| | Cornelia Hermina Bierma – | | |
| | Petronella Sprinkhuisen – | | |
Robert Sebastiaan Bierma – | | |
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| | Johanna Hillegonda Zeeman 1911–1944 Gosse Idzes Bierma 1914–2011 | | | | Maaike Groenewoud 1893–1985 | | | | Gosse Idzes Bierma 1863–1931 Johanna Jans Jensma 1866–1889 | | | | Ids Watzes Bierma 1839–1910 Trijntje Gosses Jensma 1840–1915 | | | | Watze Hessels Bierma 1793–1873 Trijntje Goffes de Boer 1793–1823 | | |
| | | Gosse Goffes Jensma 1815–1893 Janke Dirks Miedema 1816–1907 | | |
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| | | Jan Kornelis Jensma 1841–1927 Sjoukje Klazes Ypey 1848–1874 Renske Gerrits Postma 1847–1884 | | | | Cornelis Gerlofs Jensma 1782–1863 Trijntje Gosses … 1786–1811 Foekje Dirks Roeda 1789–1849 | | |
| | | Johanna Johannes Meekma – |
| | | Gerrit Gerrits Postma 1811–1863 Maaike Jans Hessels 1816–1891 | | |
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