| 3. Anna Koopal |
 |
| G: |
24 sep 1931 |
| te: |
South-Dakota, Amerika |
| O: |
1 mrt 2018 |
| te: |
South-Dakota, Amerika |
|
| 6. Marten Koopal |
|
| G: |
23 aug 1903 |
| te: |
Het Bildt |
| H: |
12 apr 1928 |
| te: |
Charles Mix, South Dakota, Amerika |
| O: |
25 mrt 1970 |
| te: |
Platte, Charles Mix, South Dakota, Amerika |
|
| 12. Sybrand Koopal |
=> |
|
| G: |
4 feb 1880 |
| te: |
Het Bildt |
| H: |
2 apr 1903 |
| te: |
Het Bildt |
| O: |
9 nov 1954 |
| te: |
Platte, Charles Mix, South Dakota, Amerika |
|
