| 1. Erik Jacob van Blommenstein |
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| G: |
13 nov 1912 |
| te: |
Rotterdam, , Zuid-Holland, Netherlands |
| O: |
9 okt 1961 |
| te: |
Diepenveen, , Overijssel, Netherlands |
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| 2. Mr. Herman Cornelis van Blommenstein |
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| G: |
26 okt 1879 |
| te: |
Charlois, , Zuid-Holland, Netherlands |
| H: |
30 apr 1907 |
| te: |
Rotterdam, , Zuid-Holland, Netherlands |
| O: |
5 okt 1944 |
| te: |
Velp, Velp, , Gelderland, Netherlands |
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| 3. Elisabeth Hankes Drielsma |
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| G: |
5 nov 1885 |
| te: |
Leeuwarden, , Friesland, Netherlands |
| O: |
31 aug 1949 |
| te: |
Den Haag, , Zuid-Holland, Netherlands |
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| 6. Jacob Hankes Drielsma |
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| G: |
5 nov 1843 |
| te: |
Leeuwarden, , Friesland, Netherlands |
| H: |
30 apr 1878 |
| te: |
Groningen, , Groningen, Netherlands |
| O: |
8 okt 1914 |
| te: |
Den Haag, , Zuid-Holland, Netherlands |
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| 12. Jonas Benjamin Drielsma |
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| G: |
10 mei 1806 |
| te: |
Leeuwarden, , Friesland, Netherlands |
| H: |
5 okt 1838 |
| te: |
Leeuwarden, , Friesland, Netherlands |
| O: |
2 feb 1864 |
| te: |
Leeuwarden, , Friesland, Netherlands |
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| 7. Rika Oppenheim |
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| G: |
7 mrt 1855 |
| te: |
Groningen, , Groningen, Netherlands |
| O: |
15 jun 1928 |
| te: |
Den Haag, , Zuid-Holland, Netherlands |
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| 14. Uri Samuels Juda Oppenheim |
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| G: |
29 mrt 1818 |
| te: |
Oude Pekela, , Groningen, Netherlands |
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| O: |
19 mei 1863 |
| te: |
Groningen, , Groningen, Netherlands |
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| 15. Betje Israels de Jongh |
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| G: |
4 sep 1819 |
| te: |
Bolsward, , Friesland, Netherlands |
| O: |
29 mei 1873 |
| te: |
Groningen, , Groningen, Netherlands |
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1912 - 1961 (48 jaar)