| 1. Fridus Ritsema |
 |
| G: |
6 nov 1848 |
| te: |
Thesinge , Ten Boer, Groningen |
| O: |
16 jul 1915 |
| te: |
Thesinge , Ten Boer, Groningen |
|
| 2. Gerard Friedus Ritsema |
 |
| G: |
24 jan 1820 |
| te: |
Ten Boer |
| H: |
8 aug 1846 |
| te: |
Ten Boer |
| O: |
29 jun 1858 |
| te: |
Gammerwolde, Ten Boer, Groningen |
|
| 4. |
 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| 8. |
 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| 16. |
 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|