Janke Douma
| Family | Pedigree | Reports |
| Janke Douma |
| b. 30 Apr 1907 |
| d. 1 Apr 1981 |
| IJnze Wopkes Douma |
| b. 24 Nov 1878 |
| d. |
| Jantje Miedema |
| b. 10 Oct 1878 |
| d. 27 Jun 1949 |
| Family | Pedigree | Reports |
| Janke Douma |
| b. 30 Apr 1907 |
| d. 1 Apr 1981 |
| IJnze Wopkes Douma |
| b. 24 Nov 1878 |
| d. |
| Jantje Miedema |
| b. 10 Oct 1878 |
| d. 27 Jun 1949 |