| 1. Klaaske Koster |
 |
| G: |
11 dec 1900 |
| te: |
Leeuwarden |
| O: |
5 okt 1977 |
| te: |
Groningen |
|
| 2. Douwe Sybes Koster |
 |
| G: |
31 jul 1857 |
| te: |
Franeker |
| H: |
29 jun 1895 |
| te: |
Tietjerksteradeel |
| O: |
18 mrt 1926 |
| te: |
Leeuwarden |
|
| 4. Sybe Lourens Koster |
 |
| G: |
9 apr 1815 |
| te: |
Franeker |
| H: |
7 nov 1841 |
| te: |
Franeker |
| O: |
4 mrt 1863 |
| te: |
Franeker |
|
|
|
|
|
|
|
|
|
| 3. Pietje Woudsma |
 |
| G: |
27 feb 1855 |
| te: |
Leeuwarden |
| O: |
2 jun 1930 |
| te: |
Leeuwarden |
|
| 6. Johannes Woudsma |
 |
| G: |
2 feb 1819 |
| te: |
Leeuwarden |
| H: |
9 okt 1842 |
| te: |
Leeuwarden |
| O: |
21 apr 1895 |
| te: |
Leeuwarden |
|
|
|
|
|
|
|
| 15. Pietje Pieters |
=> |
 |
| G: |
5 nov 1792 |
| te: |
Leeuwarden |
| O: |
22 dec 1838 |
| te: |
Leeuwarden |
|